2001 JACKSON, MISSISSIPPI (JAN)



Jackson is located on the west bank of the Pearl River, about 45 miles east of the Mississippi River and 150 miles north of the Gulf of Mexico. The nearby terrain is gently rolling with no topographic features that appreciably influence the weather. The National Weather Service Office is nearly 7 miles east–northeast of the Jackson Post Office and over 5 miles southwest of the Ross Barnett Reservoir. Alluvial plains up to 3 miles wide extend along the river near Jackson, where some levees have been built on both sides of the river.

The climate is significantly humid during most of the year, with relatively short mild winters and long warm summers. The Gulf of Mexico has a moderating effect on the climate. Cold spells are fairly frequent in winter, but are usually of short duration. Sub–zero temperatures rarely occur. Temperatures occasionally exceed 80 degrees in mid–winter. In summer, temperatures reach 90 degrees or higher on about two–thirds of the days, 100 degree readings are infrequent. Extended periods of very hot weather are rare. On unusual occasions, temperatures at night may drop into the 50s, even in July or August.

Snowfall averages less than two inches per season, with nearly two–thirds of the seasons having only a trace of snow or none at all. Ice storms occasionally cause major damage to trees and power lines during the winter or early spring season. Rainfall is abundant and fairly well–distributed throughout the year. The area does not have a true dry season. However, the six–month period, June through November, is relatively dry in comparison with the December through May period when 60 percent of the annual precipitation can be expected.

Excessive rainfall may occur in any season. In spite of the normally abundant rainfall, fairly serious droughts occasionally occur during the summer or fall season. Tropical disturbances, including hurricanes and their remnants, are infrequent. However, those that pass near or visit the Mississippi Coast in the summer or early fall may bring several days of heavy rain to the Jackson area.

Thunderstorms can be expected on an average of 65 days a year, usually occurring in each month. They are most frequent in summer when they occur on about one-third of the days. At other times of the year, thunderstorms are usually associated with passing weather systems and are likely to be attended by higher winds than in summer. Severe thunderstorms normally affect portions of the metropolitan area a few times each year.

NORMALS, MEANS, AND EXTREMES

JACKSON, MS (JAN)

LATITUDE:    LONGITUDE:     ELEVATION (FT):    TIME ZONE:    WBAN: 03940

32 19′ 11″ N  90 04′ 39″ W  GRND: 293  BARO: 296  CENTRAL (UTC + 6)  

2001 Jackson, Mississippi (JAN)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 55.6 60.1 69.3 77.4 84.0 90.6 92.4 92.0 88.0 79.1 69.2 59.5 76.4
MEAN DAILY MAXIMUM 37 56.0 60.7 68.5 76.9 83.7 90.3 92.2 91.7 87.0 77.7 68.0 59.5 76.0
HIGHEST DAILY MAXIMUM 37 82 85 89 94 99 105 106 107 104 95 88 84 107
YEAR OF OCCURRENCE 1972 1989 1982 1987 1964 1988 1980 2000 2000 1998 1971 1978 AUG 2000
MEAN OF EXTREME MAXS. 38 74.2 78.2 83.6 87.2 91.9 96.1 97.9 97.4 94.7 89.0 82.5 76.8 87.5
NORMAL DAILY MINIMUM 30 32.7 35.7 44.1 51.9 60.0 67.1 70.5 69.7 63.7 50.3 42.3 36.1 52.0
MEAN DAILY MINIMUM 37 34.8 37.4 44.5 52.5 60.8 68.0 71.4 70.2 64.8 51.6 43.4 37.5 53.1
LOWEST DAILY MINIMUM 37 2 10 15 27 38 47 51 55 35 26 17 4 2
YEAR OF OCCURRENCE 1985 1996 1980 1987 1971 1984 1967 1992 1967 1993 1976 1989 JAN 1985
MEAN OF EXTREME MINS. 38 16.5 19.8 26.5 35.1 46.2 55.7 64.0 62.0 49.4 34.8 26.1 19.7 38.0
NORMAL DRY BULB 30 44.1 47.9 56.7 64.6 72.0 78.8 81.5 80.9 75.9 64.7 55.8 47.8 64.2
MEAN DRY BULB 38 45.3 49.0 56.6 64.6 72.2 79.0 81.8 81.1 75.8 64.8 55.7 48.2 64.5
MEAN WET BULB 35 41.5 44.2 50.9 58.6 65.5 71.5 74.3 73.4 69.0 58.5 51.2 44.2 58.6
MEAN DEW POINT 35 36.9 39.1 45.7 53.8 61.9 68.3 71.6 70.7 65.9 54.4 47.1 40.0 54.6
NORMAL NO. DAYS WITH:
MAXIMUM 90 30 0.0 0.0 0.0 0.3 4.8 18.7 23.9 22.8 12.1 1.3 0.0 0.0 83.9
MAXIMUM 32 30 0.9 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 * 0.4 1.6
MINIMUM 32 30 15.3 11.3 4.2 0.4 0.0 0.0 0.0 0.0 0.0 0.5 5.7 12.6 50.0
MINIMUM 0 30 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
H/C NORMAL HEATING DEG. DAYS 30 656 485 285 87 7 0 0 0 6 104 295 542 2467
NORMAL COOLING DEG. DAYS 30 8 6 28 75 224 414 512 493 333 94 19 9 2215
RH NORMAL (PERCENT) 30 76 73 71 72 74 74 77 77 77 75 76 76 75
HOUR 00 LST 30 84 82 82 84 87 88 90 90 90 88 87 84 86
HOUR 06 LST 30 87 87 88 90 92 92 94 94 94 93 90 87 91
HOUR 12 LST 30 64 60 56 54 56 55 59 58 58 53 57 62 58
HOUR 18 LST 30 70 63 58 57 60 60 66 66 70 71 73 74 66
S PERCENT POSSIBLE SUNSHINE 31 49 55 61 66 63 71 64 65 63 67 57 47 61
W/O MEAN NO. DAYS WITH:
HEAVY FOG(VISBY 1/4 MI) 37 3.3 2.0 1.7 1.5 1.1 0.7 1.3 1.5 1.5 2.2 2.4 3.3 22.5
THUNDERSTORMS 37 2.3 2.7 5.8 5.6 7.0 8.9 12.6 10.2 5.1 2.2 2.5 2.3 67.2
CLOUDINESS MEAN:
SUNRISE-SUNSET (OKTAS) 1 6.4 5.6 4.8 4.0 4.0 3.6 5.6 3.2 2.4 5.2 5.6 6.4 4.7
MIDNIGHT-MIDNIGHT (OKTAS) 1 6.4 5.6 4.8 4.0 4.0 3.2 3.6 2.8 2.4 5.6 5.6 6.4 4.5
MEAN NO. DAYS WITH:
CLEAR 2 8.5 12.5 10.0 12.0 16.0 14.5 9.0 9.0 5.0 6.0 5.0 3.0 110.5
PARTLY CLOUDY 2 3.5 3.5 4.0 6.0 8.0 12.0 4.0 7.0 1.0 3.0 7.0
CLOUDY 2 15.0 13.0 10.0 5.0 11.5 9.0 14.0 5.0 1.0 12.0 7.0 5.0 107.5
PR MEAN STATION PRESSURE(IN) 28 29.80 29.76 29.68 29.66 29.63 29.64 29.68 29.68 29.68 29.74 29.76 29.80 29.71
MEAN SEA-LEVEL PRES. (IN) 34 30.16 30.12 30.04 30.01 29.98 29.99 30.02 30.02 30.02 30.08 30.11 30.15 30.06
WINDS MEAN SPEED (MPH) 30 7.9 8.1 8.4 7.8 6.7 6.0 5.2 5.1 6.0 6.0 6.9 7.6 6.8
PREVAIL. DIR (TENS OF DEGS) 31 15 34 16 16 15 15 15 14 14 14 15 15 15
MAXIMUM 2-MINUTE:
SPEED (MPH) 8 32 43 37 43 28 39 44 33 55 26 29 41 55
DIR. (TENS OF DEGS) 34 13 14 12 10 34 02 04 06 35 26 15 06
YEAR OF OCCURRENCE 1996 1998 1999 1997 2001 1994 1998 2000 1998 2001 2000 1994 SEP 1998
MAXIMUM 5-SECOND:
SPEED (MPH) 8 40 51 47 54 39 47 53 45 63 34 39 46 63
DIR. (TENS OF DEGS) 34 14 33 29 26 33 02 01 06 26 27 15 06
YEAR OF OCCURRENCE 1996 1998 2000 1996 1997 1994 1998 1999 1998 1996 2000 1994 SEP 1998
PRECIPITATION NORMAL (IN) 30 5.24 4.70 5.82 5.57 5.05 3.18 4.51 3.77 3.55 3.26 4.81 5.91 55.37
MAXIMUM MONTHLY (IN) 37 14.10 10.28 15.13 15.95 10.82 8.45 13.25 8.33 9.61 9.13 9.98 17.70 17.70
YEAR OF OCCURRENCE 1979 1987 1976 1991 1967 1997 1979 1992 1965 1970 1977 1982 DEC 1982
MINIMUM MONTHLY (IN) 37 0.75 1.29 2.05 1.21 0.29 0.10 1.04 0.26 0.56 0.00 0.51 0.91 0.00
YEAR OF OCCURRENCE 1986 2000 1966 1987 1988 1988 1987 2000 1969 1963 1985 1980 OCT 1963
MAXIMUM IN 24 HOURS (IN) 37 5.63 3.46 4.69 8.42 3.43 6.49 5.49 4.79 5.86 6.99 4.34 6.71 8.42
YEAR OF OCCURRENCE 1979 1974 1991 1979 1989 1997 2001 1992 1965 1975 1983 1982 APR 1979
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 10.8 9.3 10.1 8.3 9.4 8.2 10.3 9.5 8.3 5.9 8.1 10.1 108.3
PRECIPITATION 1.00 30 1.7 1.4 2.0 1.9 1.9 0.9 1.0 1.0 0.9 0.9 1.6 2.1 17.3
SNOWFALL NORMAL (IN) 30 0.6 0.2 0.2 0.* 0.0 0.0 0.0 0.0 0.0 0.0 0.* 0.1 1.1
MAXIMUM MONTHLY (IN) 37 6.3 3.6 5.3 1.1 0.0 0.0 0.0 T 0.0 0.0 0.2 4.8 6.3
YEAR OF OCCURRENCE 1982 1968 1968 1987 2001 1976 1997 JAN 1982
MAXIMUM IN 24 HOURS (IN) 37 6.0 3.6 5.3 1.1 0.0 0.0 0.0 T 0.0 0.0 0.2 4.8 6.0
YEAR OF OCCURRENCE 1982 1968 1968 1987 2001 1976 1997 JAN 1982
MAXIMUM SNOW DEPTH (IN) 36 6 1 2 1 0 0 0 0 0 0 T 5 6
YEAR OF OCCURRENCE 1982 1985 1968 1987 1976 1997 JAN 1982
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 0.2 0.1 0.* 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4

2001 Jackson, Mississippi (JAN)

PRECIPITATION (inches) 2001 JACKSON, MS (JAN)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0.56 0.41 2.13 3.98 2.18 2.71 3.43 2.90 2.69 2.29 3.00 1.47 27.75
1973 2.05 1.35 9.08 2.91 5.65 2.84 8.71 1.60 10.32 5.80 2.36 2.59 55.26
1974 1.05 1.12 1.18 2.94 10.07 2.16 1.13 4.98 1.13 7.22 1.62 1.52 36.12
1975 2.14 1.59 1.49 6.61 3.45 2.46 0.25 4.85 6.10 0.35 2.75 2.03 34.07
1976 0.53 0.66 2.53 3.30 5.49 5.08 0.77 0.76 1.41 2.84 0.21 0.10 23.68
1977 1.15 0.57 2.59 2.35 5.43 6.18 2.74 7.99 11.34 7.67 1.36 0.37 49.74
1978 0.39 1.32 1.77 5.36 4.98 2.64 5.49 2.66 4.04 0.33 3.93 1.05 33.96
1979 2.35 0.78 2.96 2.35 3.00 5.37 4.68 3.66 1.16 3.56 1.83 0.05 31.75
1980 1.60 1.44 3.64 1.02 3.06 2.52 1.99 4.89 1.63 4.13 0.45 5.42 31.79
1981 0.49 0.31 1.43 1.94 9.46 7.44 8.43 2.43 2.71 4.14 2.84 0.45 42.07
1982 2.66 1.13 2.94 1.55 9.81 6.04 2.73 9.58 1.58 3.04 2.21 3.94 47.21
1983 0.58 0.57 2.93 5.52 6.03 5.03 0.26 0.86 1.89 3.85 3.94 1.42 32.88
1984 0.14 1.96 4.52 6.82 2.26 4.14 3.91 0.75 3.42 6.04 1.24 3.57 38.77
1985 0.94 2.69 2.05 1.75 7.00 3.56 5.82 6.98 9.23 7.51 3.95 1.24 52.72
1986 0.02 1.25 1.34 2.12 4.76 2.48 8.36 3.16 10.40 3.17 1.18 1.20 39.44
1987 0.77 2.26 2.85 2.24 4.74 4.58 3.00 4.64 3.66 1.32 1.88 2.05 33.99
1988 1.40 0.72 1.43 2.15 2.14 1.80 1.21 1.87 8.48 0.21 1.96 0.85 24.22
1989 0.98 0.59 2.13 1.50 4.56 3.44 4.76 7.38 8.87 2.88 T 0.55 37.64
1990 1.20 2.11 3.90 2.47 7.36 6.27 4.40 5.04 1.28 2.46 3.01 1.11 40.61
1991 1.37 0.20 2.36 4.99 3.69 3.06 1.72 1.35 2.12 3.71 2.05 2.08 28.70
1992 1.21 2.01 3.79 4.92 1.05 3.84 15.47 2.37 5.69 1.38 5.12 3.78 50.63
1993 1.96 1.28 2.21 5.59 7.30 5.67 10.90 3.98 7.63 1.75 2.07 1.12 51.46
1994 0.63 1.47 0.33 6.98 1.29 2.45 2.79 3.54 2.65 1.27 3.18 1.76 28.34
1995 1.42 1.35 1.12 2.12 12.75 3.36 4.64 4.00 1.85 0.50 1.18 0.40 34.69
1996 1.12 0.35 1.28 1.80 10.29 7.51 4.83 2.97 3.44 3.67 3.15 0.03 40.44
1997 0.69 2.94 1.16 4.13 4.63 2.90 3.53 2.49 3.34 2.98 1.95 2.33 33.07
1998 0.97 1.10 3.44 2.15 1.75 9.22 4.97 3.61 8.69 8.15 4.29 1.19 49.53
1999 2.30 1.71 1.49 8.43 5.62 8.67 0.51 1.56 5.32 0.67 1.63 2.18 40.09
2000 0.46 2.21 2.93 0.66 4.55 7.55 6.02 0.50 3.13 3.55 2.59 0.81 34.96
2001 2.08 3.25 3.88 4.03 4.81 11.86 6.26 5.48 7.98 2.56 0.56 0.75 53.50
POR=111 YRS 1.31 1.45 2.57 3.41 4.85 4.90 4.04 3.85 4.36 2.95 1.93 1.41 37.03

2001 Jackson, Mississippi (JAN)

AVERAGE TEMPERATURE (F) 2001 JACKSON, MS (JAN)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 51.5 51.2 58.8 66.4 71.9 79.6 80.4 82.8 81.5 68.0 52.0 50.1 66.2
1973 44.3 46.9 62.1 62.5 70.9 81.3 83.7 80.1 77.6 68.6 61.7 49.3 65.8
1974 55.1 50.1 62.4 63.1 73.8 74.8 80.4 79.3 72.0 64.1 55.6 50.4 65.1
1975 51.8 52.9 56.8 63.5 74.1 78.3 81.2 80.6 72.3 66.2 56.6 47.4 65.1
1976 44.3 56.7 60.0 65.4 67.9 76.7 80.8 80.2 74.8 59.9 47.2 45.0 63.2
1977 35.3 49.3 59.7 66.3 75.5 81.7 82.7 82.0 78.4 62.0 57.1 47.5 64.8
1978 36.5 39.6 52.5 65.4 71.9 80.0 83.4 82.0 78.4 63.6 60.3 48.8 63.5
1979 38.3 46.0 57.4 64.8 70.3 76.7 80.2 79.7 73.8 64.1 50.9 46.2 62.4
1980 47.4 45.5 54.3 61.6 72.8 80.7 85.8 84.7 82.4 61.4 53.2 46.2 64.7
1981 41.8 48.7 55.1 71.0 69.9 81.8 83.6 82.6 73.2 65.4 58.6 46.6 64.9
1982 47.2 48.8 62.1 63.8 74.7 79.5 82.4 81.8 74.1 65.1 56.4 52.9 65.7
1983 43.7 47.4 53.9 60.1 70.7 76.6 82.9 82.7 74.1 65.8 55.1 41.8 62.9
1984 39.9 49.7 56.5 63.9 71.0 78.9 80.6 79.9 74.6 71.2 53.6 58.3 64.8
1985 38.0 44.8 61.3 65.2 72.2 78.8 80.5 80.3 74.0 68.0 62.5 42.7 64.0
1986 45.3 52.6 57.0 64.1 72.9 80.4 83.2 80.5 79.8 66.1 60.1 46.6 65.7
1987 44.4 51.3 55.5 62.2 75.9 79.0 82.0 82.9 75.2 59.9 56.6 52.1 64.8
1988 41.7 47.5 55.8 64.6 70.8 79.8 82.5 82.6 77.9 61.6 59.3 49.3 64.5
1989 52.5 48.2 58.8 63.2 72.0 78.4 80.6 80.8 74.1 63.9 57.1 40.4 64.2
1990 51.0 56.2 60.0 63.7 71.8 81.3 81.5 82.3 78.4 63.7 58.0 51.8 66.6
1991 46.6 51.7 59.3 68.0 75.6 79.9 82.9 81.4 76.0 67.2 52.4 52.0 66.1
1992 45.6 53.7 57.6 64.1 71.1 77.7 82.0 77.8 75.6 65.0 52.7 50.1 64.4
1993 49.9 49.2 54.4 61.0 71.0 80.9 82.5 82.9 75.9 62.3 52.1 45.8 64.0
1994 41.9 49.4 55.8 66.2 70.6 79.4 78.9 79.0 74.0 66.2 58.5 49.7 64.1
1995 46.9 49.5 58.5 64.7 73.5 76.0 82.4 83.5 75.2 63.8 52.1 47.6 64.5
1996 45.2 49.8 51.9 61.5 75.7 78.6 81.3 78.9 73.6 65.2 55.3 50.9 64.0
1997 46.0 51.5 61.5 59.6 69.8 77.1 82.3 79.5 76.7 65.1 50.7 44.9 63.7
1998 49.2 50.0 55.7 62.6 74.4 82.2 83.5 82.7 80.6 68.4 58.7 51.4 66.6
1999 51.9 53.9 54.4 69.3 71.5 79.5 82.0 84.0 75.2 65.0 55.8 48.4 65.9
2000 48.8 54.7 60.4 61.8 75.3 78.7 83.5 85.0 76.5 65.7 52.1 38.5 65.1
2001 41.6 53.5 52.1 67.8 72.3 77.2 81.6 80.5 74.0 62.1 59.8 52.0 64.5
POR=93 YRS 47.3 50.6 57.2 65.1 72.5 79.5 81.9 81.4 76.7 66.0 55.7 49.0 65.2

REFERENCE NOTES:

PAGE 1:

THE TEMPERATURE GRAPH SHOWS NORMAL MAXIMUM AND NORMAL MINIMUM DAILY TEMPERATURES (SOLID CURVES) AND THE ACTUAL DAILY HIGH AND LOW TEMPERATURES (VERTICAL BARS).

PAGE 2 AND 3:

H/C INDICATES HEATING AND COOLING DEGREE DAYS.

RH INDICATES RELATIVE HUMIDITY

W/O INDICATES WEATHER AND OBSTRUCTIONS

S INDICATES SUNSHINE.

PR INDICATES PRESSURE.

CLOUDINESS ON PAGE 3 IS THE SUM OF THE CEILOMETER AND SATELLITE DATA NOT TO EXCEED EIGHT EIGHTHS (OKTAS).

GENERAL:

T INDICATES TRACE PRECIPITATION, AN AMOUNT GREATER THAN ZERO BUT LESS THAN THE LOWEST REPORTABLE VALUE.

+ INDICATES THE VALUE ALSO OCCURS ON EARLIER DATES.

BLANK ENTRIES DENOTE MISSING OR UNREPORTED DATA.

NORMALS ARE 30–YEAR AVERAGES (1961–1990).

ASOS INDICATES AUTOMATED SURFACE OBSERVING SYSTEM.

PM INDICATES THE LAST DAY OF THE PREVIOUS MONTH.

POR (PERIOD OF RECORD) BEGINS WITH THE JANUARY DATA MONTH AND IS THE NUMBER OF YEARS USED TO COMPUTE THE MEAN. INDIVIDUAL MONTHS WITHIN THE POR MAY BE MISSING.

WHEN THE POR FOR A NORMAL IS LESS THAN 30 YEARS, THE NORMAL IS PROVISIONAL AND IS BASED ON THE NUMBER OF YEARS INDICATED.

0.* OR * INDICATES THE VALUE OR MEAN–DAYS–WITH IS BETWEEN 0.00 AND 0.05.

CLOUDINESS FOR ASOS STATIONS DIFFERS FROM THE NON–ASOS OBSERVATION TAKEN BY A HUMAN OBSERVER. ASOS STATION CLOUDINESS IS BASED ON TIME-AVERAGED CEILOMETER DATA FOR CLOUDS AT OR BELOW 12,000 FEET AND ON SATELLITE DATA FOR CLOUDS ABOVE 12,000 FEET.

THE NUMBER OF DAYS WITH CLEAR, PARTLY CLOUDY, AND CLOUDY CONDITIONS FOR ASOS STATIONS IS THE SUM OF THE CEILOMETER AND SATELLITE DATA FOR THE SUNRISE TO SUNSET PERIOD.

GENERAL CONTINUED:

CLEAR INDICATES 0–2 OKTAS, PARTLY CLOUDY INDICATES 3–6 OKTAS, AND CLOUDY INDICATES 7 OR 8 OKTAS. WHEN AT LEAST ONE OF THE ELEMENTS (CEILOMETER OR SATELLITE) IS MISSING, THE DAILY CLOUDINESS IS NOT COMPUTED.

WIND DIRECTION IS RECORDED IN TENS OF DEGREES (2 DIGITS) CLOCKWISE FROM TRUE NORTH. "00" INDICATES CALM. "36" INDICATES TRUE NORTH.

RESULTANT WIND IS THE VECTOR AVERAGE OF THE SPEED AND DIRECTION.

AVERAGE TEMPERATURE IS THE SUM OF THE MEAN DAILY MAXIMUM AND MINIMUM TEMPERATURE DIVIDED BY 2.

SNOWFALL DATA COMPRISE ALL FORMS OF FROZEN PRECIPITATION, INCLUDING HAIL.

A HEATING (COOLING) DEGREE DAY IS THE DIFFERENCE BETWEEN THE AVERAGE DAILY TEMPERATURE AND 65 F.

DRY BULB IS THE TEMPERATURE OF THE AMBIENT AIR.

DEW POINT IS THE TEMPERATURE TO WHICH THE AIR MUST BE COOLED TO ACHIEVE 100 PERCENT RELATIVE HUMIDITY.

WET BULB IS THE TEMPERATURE THE AIR WOULD HAVE IF THE MOISTURE CONTENT WAS INCREASED TO 100 PERCENT RELATIVE HUMIDITY.

ON JULY 1, 1996, THE NATIONAL WEATHER SERVICE BEGAN USING THE "METAR" OBSERVATION CODE THAT WAS ALREADY EMPLOYED BY MOST OTHER NATIONS OF THE WORLD. THE MOST NOTICEABLE DIFFERENCE IN THIS ANNUAL PUBLICATION WILL BE THE CHANGE IN UNITS FROM TENTHS TO EIGHTS (OKTAS) FOR REPORTING THE AMOUNT OF SKY COVER.

2001 Jackson, Mississippi (JAN)

HEATING DEGREE DAYS (base 65 F) 2001 JACKSON, MS (JAN)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0 0 4 71 400 466 634 503 135 146 19 0 2378
1973-74 0 0 0 61 173 486 327 419 165 115 1 0 1747
1974-75 0 0 6 79 308 465 429 348 293 138 0 0 2066
1975-76 0 0 26 59 304 543 635 252 201 59 18 0 2097
1976-77 0 0 0 197 528 614 913 435 196 43 1 0 2927
1977-78 0 0 0 136 246 538 881 706 377 73 14 0 2971
1978-79 0 0 0 98 164 519 821 531 262 69 20 0 2484
1979-80 0 0 0 98 421 580 540 570 337 124 3 0 2673
1980-81 0 0 0 158 363 575 711 454 312 20 18 0 2611
1981-82 0 0 16 104 217 568 569 451 199 123 4 0 2251
1982-83 0 0 19 120 286 421 653 487 347 176 12 0 2521
1983-84 0 0 21 83 315 716 770 440 289 113 29 0 2776
1984-85 0 0 12 27 350 249 832 562 158 92 2 0 2284
1985-86 0 0 14 54 148 685 606 360 261 90 8 0 2226
1986-87 0 0 0 79 183 566 632 378 297 150 0 0 2285
1987-88 0 0 0 161 271 408 716 502 292 74 4 0 2428
1988-89 0 0 0 134 208 484 392 495 239 135 20 0 2107
1989-90 0 0 11 109 265 754 429 261 209 125 9 0 2172
1990-91 0 0 5 145 227 427 566 368 229 35 2 0 2004
1991-92 0 0 4 67 404 403 593 323 233 118 18 0 2163
1992-93 0 0 1 45 364 452 461 437 327 163 5 0 2255
1993-94 0 0 10 161 401 588 709 437 286 88 13 0 2693
1994-95 0 0 7 67 211 470 558 430 229 80 14 0 2066
1995-96 0 0 4 106 389 533 603 460 410 161 4 0 2670
1996-97 0 0 11 80 298 435 592 381 143 170 16 0 2126
1997-98 0 0 0 129 420 617 481 414 336 124 0 1 2522
1998-99 0 0 0 46 197 442 412 320 324 53 3 0 1797
1999-00 0 0 8 87 268 509 496 308 165 119 0 0 1960
2000-01 0 0 7 73 404 813 717 330 392 65 1 0 2802
2001- 0 0 16 149 168 408

2001 Jackson, Mississippi (JAN)

COOLING DEGREE DAYS (base 65 F) 2001 JACKSON, MS (JAN)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 20 17 30 126 221 445 487 561 506 169 15 16 2613
1973 1 0 51 77 210 498 583 477 382 181 81 5 2546
1974 25 8 91 64 279 298 487 451 223 57 34 19 2036
1975 26 17 46 96 290 407 509 487 255 101 59 7 2300
1976 0 17 52 76 116 357 497 481 300 47 0 0 1943
1977 0 3 39 89 331 508 555 534 409 47 16 4 2535
1978 2 0 0 92 235 456 576 536 409 60 31 24 2421
1979 0 2 35 69 190 357 482 461 269 76 4 2 1947
1980 0 11 11 28 253 476 652 619 527 52 14 1 2644
1981 0 3 12 207 174 514 582 555 267 127 30 2 2473
1982 25 3 116 93 310 443 544 530 297 130 35 51 2577
1983 0 0 13 35 194 354 564 555 300 115 24 6 2160
1984 0 5 35 87 221 422 489 470 310 227 19 49 2334
1985 0 3 54 105 233 424 486 480 290 153 79 0 2307
1986 0 21 18 70 259 469 572 487 446 122 44 2 2510
1987 0 0 9 72 344 429 533 560 311 14 22 15 2309
1988 0 1 14 67 193 452 552 552 395 34 45 3 2308
1989 8 30 54 87 245 406 489 498 293 84 36 0 2230
1990 3 25 60 92 226 494 515 544 412 113 24 24 2532
1991 0 3 59 129 337 456 562 515 341 142 37 7 2588
1992 0 1 10 97 213 383 532 403 324 51 2 0 2016
1993 0 1 6 48 197 485 547 562 340 82 19 0 2287
1994 0 6 9 132 196 437 437 439 283 110 24 4 2077
1995 5 2 38 79 282 339 545 581 318 76 9 4 2278
1996 0 28 12 64 343 418 512 439 275 92 13 5 2201
1997 13 9 40 15 175 368 540 459 357 139 0 0 2115
1998 2 0 55 60 298 522 582 554 474 156 12 29 2744
1999 12 14 0 188 213 441 533 596 319 96 1 1 2414
2000 2 17 28 29 328 417 581 628 357 102 23 0 2512
2001 0 16 0 156 238 375 522 487 290 67 17 10 2178

2001 Jackson, Mississippi (JAN)

SNOWFALL (inches) 2001 JACKSON, MS (JAN)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0.0 0.0 0.0 0.0 0.0 0.0 T T 0.0 0.0 0.0 0.0 T
1973-74 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.3
1974-75 0.0 0.0 0.0 0.0 T 0.0 T 0.0 T 0.0 0.0 0.0 T
1975-76 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 0.0 0.0 T
1976-77 0.0 0.0 0.0 0.0 0.2 0.0 5.8 0.0 0.0 0.0 0.0 0.0 6.0
1977-78 0.0 0.0 0.0 0.0 0.0 0.0 1.1 T 0.1 0.0 0.0 0.0 1.2
1978-79 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 0.0 T
1979-80 0.0 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 T
1980-81 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 0.0 T
1981-82 0.0 0.0 0.0 0.0 0.0 T 6.3 T T 0.0 0.0 0.0 6.3
1982-83 0.0 0.0 0.0 0.0 0.0 0.0 T T 0.0 T 0.0 0.0 T
1983-84 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 0.0 T
1984-85 0.0 0.0 0.0 0.0 0.0 T 0.3 1.4 0.0 0.0 0.0 0.0 1.7
1985-86 0.0 0.0 0.0 0.0 0.0 T 0.0 T 0.0 0.0 0.0 0.0 T
1986-87 0.0 0.0 0.0 0.0 0.0 0.0 T 0.0 T 1.1 0.0 0.0 1.1
1987-88 0.0 0.0 0.0 0.0 0.0 0.0 T T 0.0 0.0 0.0 0.0 T
1988-89 0.0 0.0 0.0 0.0 0.0 T 0.0 T T T 0.0 0.0 T
1989-90 0.0 0.0 0.0 0.0 T 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1
1990-91 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 T 0.0 0.0 T
1991-92 0.0 0.0 0.0 0.0 T 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.2
1992-93 0.0 0.0 0.0 0.0 T 0.0 T 0.0 1.6 0.0 0.0 0.0 1.6
1993-94 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 0.0 T
1994-95 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1995-96 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0
1996-97 0.0 0.0 0.0 0.0 0.0 0.7 T T 0.0 0.0 0.0 0.0 0.7
1997-98 0.0 0.0 0.0 0.0 0.0 4.8 0.0 0.0 0.0 0.0 0.0 0.0 4.8
1998-99 0.0 0.0 0.0 0.0 0.0 T T 0.0 T 0.0 0.0 0.0 T
1999-00 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.0 0.0 T 0.0 0.0 0.4
2000-01 0.0 0.0 0.0 0.0 T 1.0 T 0.0 0.0 0.0 0.0 0.0 1.0
2001- 0.0 T 0.0 0.0 0.0 0.0
POR=38 YRS 0.0 0.0 0.0 0.0 T 0.1 0.5 0.2 0.2 T 0.0 0.0 1.0



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