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Clarke County, MS Weather and Climate Synopsis

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36 Hr. Forecast Map
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Weather Summary Hourly Observations Nowcast Agricultural Weather Outlook
7 Day Forecast Medium & Long Range Outlook Almanac Historical Facts





US Weekly Rainfall Departure



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A joint service of the UK Ag Weather Center and the National Weather Service.

1242 PM CDT Sun Jul 20 2025

...New AVIATION...

.MESOSCALE UPDATE...
Issued at 959 AM CDT Sun Jul 20 2025

Have made some minor adjustments to the heat advisory for today
and expanded it eastward in south central MS. Overall, the hot
near term forecast is on track and no immediate changes are
planned in the heat messaging, but will reassess in the next few
hours with the new guidance coming in. In terms of convective 
potential, there is a moisture plume on the periphery of the 
subtropical high that continues to linger over northern portions 
of the area and this will support isolated tstms with continued
heating and destabilization. /EC/

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

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Regional Hourly Observations For CLARKE County
200 PM CDT SUN JUL 20 2025
MERIDIAN KEY   SUNNY     92  75  57 SW8       30.10F HX 103           
MERIDIAN NAS   PTSUNNY   90  74  59 VRB5      30.10F HX  99           
PHILADELPHIA   PTCLDY   N/A N/A N/A VRB5      30.08F                  
VICKSBURG VKS  MOSUNNY   91  81  70 VRB5      30.07F HX 110           

Current Temperatures, Dewpoint, RH, Wind, Regional Obs, Surface 4-Panel


Current Agricultural Weather Conditions in Mississippi
Based on observations at 100pm CDT, Sunday July 20, 2025

Across Mississippi...temperatures are near 91 degrees north, near 93 degrees central, and near 91 degrees south. Current sky conditions are mostly sunny north, mostly sunny central, and mostly sunny south. In the north, relative humidity is near 59%, and the dew point is near 75 degrees. The heat index is near 101 degrees north. In the central part of the state, relative humidity is near 59%, and the dew point is near 77 degrees. The heat index is near 107 degrees central. In the south, relative humidity is near 58%, and the dew point is near 74 degrees. The heat index is near 101 degrees south. The livestock heat stress category is danger north, emergency central, and danger south. Winds are variable at 5 mph north, where conditions are favorable for spraying. Winds are from the southwest at 9 mph central, where conditions are favorable for spraying. Winds are from the southwest at 12 mph south, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 93 degrees at Jackson International Airport and Hattiesburg. The lowest temperature is 90 degrees at and McComb.


Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

US Radar, All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For CLARKE County
Hazardous report currently not available
NWS Severe Weather Map , Convective Outlook

7-Day Forecast For CLARKE County, MS
1258 PM CDT Sun Jul 20 2025


HEAT ADVISORY IN EFFECT FROM 10 AM TO 8 PM CDT MONDAY

THIS AFTERNOON
Sunny. Near steady temperature in the lower 90s. West winds around 5 mph. Heat index values up to 106.

TONIGHT
Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph.

MONDAY
Sunny. Highs in the mid 90s. West winds around 5 mph. Heat index values up to 106.

MONDAY NIGHT
Partly cloudy. Lows in the mid 70s. West winds around 5 mph.

TUESDAY
Sunny. Highs in the upper 90s. Northwest winds around 5 mph. Heat index values up to 106.

TUESDAY NIGHT
Partly cloudy. Lows in the mid 70s.

WEDNESDAY
Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 50 percent. Heat index values up to 110.

WEDNESDAY NIGHT
Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 70s. Chance of rain 50 percent.

THURSDAY
Mostly sunny. Showers and thunderstorms likely in the afternoon. Highs in the lower 90s. Chance of rain 70 percent.

THURSDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 70s.

FRIDAY
Mostly sunny. A chance of showers in the morning, then showers and thunderstorms likely in the afternoon. Highs around 90. Chance of rain 70 percent.

FRIDAY NIGHT
Partly cloudy. Lows in the lower 70s.

SATURDAY
Mostly sunny. Showers and thunderstorms likely in the afternoon. Highs in the lower 90s. Chance of rain 60 percent.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2


Medium & Long Range Outlook For Mississippi
                          MISSISSIPPI                                                                     
                 ---------------------------------------------
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   JUL 25-29 JUL 27-AUG 2    JUN       JUN-AUG                      
                 -----------  -----------  --------  ---------
   Temperature:      Above        Above                                            
 Precipitation:      Above       Normal                                            

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Almanac Information


Historical Weather And Climate Facts For Today

////////////////////////
JULY 20TH...HISTORIC WEATHER EVENTS
...1930...
The temperature at Washington D.C. soared to an all-time record of 106
degrees. The next day Millsboro reached 110 degrees to set a record for the
state of Delaware. July 1930 was one of the hottest and driest summers in
the U.S., particularly in the Missouri Valley where severe drought
conditions developed. Toward the end of the month state records were set
for Kentucky with 114 degrees, and Mississippi with 115 degrees. (David
Ludlum)
...1934...
The temperature at Keokuk IA soared to 118 degrees to establish a state
record. (The Weather Channel)
...1953...
Twenty-two inches of hail reportedly fell northeast of Dickinson ND. (The
Weather Channel)
...1986...
The temperature at Charleston SC hit 104 degrees for the second day in a
row to tie their all-time record high. (The Weather Channel)
...1987...
Thunderstorms produced severe weather across Minnesota, Wisconsin and
Michigan. Thunderstorms produced wind gusts to 87 mph at Mosinee WI, and
strong thunderstorm winds capsized twenty-six boats on Grand Traverse Bay
drowning two women. Thunderstorms produced nine inches of rain at Shakopee
MN, with 7.83 inches reported in six hours at Chaska MN. Thunderstorms in
north central Nebraska produced hail as large as golf balls in southwestern
Cherry County, which accumulated to a depth of 12 inches. (The National
Weather Summary) (Storm Data)
...1988...
The temperature at Redding CA soared to an all-time record high of 118
degrees. Showers and thunderstorms produced much needed rains from New
England to southern Texas. Salem IN was deluged with 7.2 inches of rain
resulting in flash flooding. (The National Weather Summary)
...1989...
Showers and thunderstorms in the Middle Atlantic Coast Region soaked
Wilmington DE with 2.28 inches of rain, pushing their total for the period
May through July past the previous record of 22.43 inches. Heavy rain over
that three month period virtually wiped out a 16.82 inch deficit which had
been building since drought conditions began in 1985. Thunderstorms in
central Indiana deluged Lebanon with 6.50 inches of rain in twelve hours,
and thunderstorms over Florida produced wind gusts to 84 mph at Flagler
Beach. (The National Weather Summary) (Storm Data)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky