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Hattiesburg, Mississippi 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Hattiesburg MS
National Weather Service Forecast for: Hattiesburg MS
Issued by: National Weather Service Jackson, MS
Updated: 6:15 am CDT Jul 16, 2025
 
Today

Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind becoming north around 5 mph in the morning.
Sunny then
Chance
T-storms
Tonight

Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am.  Patchy fog after midnight.  Otherwise, mostly cloudy, with a low around 75. Calm wind.  Chance of precipitation is 30%.
Chance
T-storms and
Patchy Fog
Thursday

Thursday: Showers and thunderstorms, mainly after 1pm.  High near 91. Heat index values as high as 100. Calm wind becoming east northeast around 5 mph in the morning.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms then
T-storms
Thursday
Night
Thursday Night: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. East southeast wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Slight Chance
Showers
Friday

Friday: A chance of showers, then showers and thunderstorms after 10am.  High near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Chance
T-storms then
T-storms
Friday
Night
Friday Night: Mostly cloudy, with a low around 75. South wind around 5 mph becoming calm  in the evening.
Mostly Cloudy

Saturday

Saturday: Showers and thunderstorms likely, mainly after 1pm.  Mostly sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the morning.  Chance of precipitation is 70%.
Chance
Showers then
T-storms
Likely
Saturday
Night
Saturday Night: Partly cloudy, with a low around 75. South southwest wind around 5 mph becoming calm  in the evening.
Partly Cloudy

Sunday

Sunday: A 50 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 96. Calm wind becoming west southwest around 5 mph in the morning.
Sunny then
Chance
T-storms
Hi 98 °F Lo 75 °F Hi 91 °F Lo 75 °F Hi 91 °F Lo 75 °F Hi 94 °F Lo 75 °F Hi 96 °F

Heat Advisory
 

Today
 
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Sunny and hot, with a high near 98. Heat index values as high as 107. Calm wind becoming north around 5 mph in the morning.
Tonight
 
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.
Thursday
 
Showers and thunderstorms, mainly after 1pm. High near 91. Heat index values as high as 100. Calm wind becoming east northeast around 5 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
 
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 75. East southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
 
A chance of showers, then showers and thunderstorms after 10am. High near 91. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
 
Mostly cloudy, with a low around 75. South wind around 5 mph becoming calm in the evening.
Saturday
 
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 94. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 70%.
Saturday Night
 
Partly cloudy, with a low around 75. South southwest wind around 5 mph becoming calm in the evening.
Sunday
 
A 50 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 96. Calm wind becoming west southwest around 5 mph in the morning.
Sunday Night
 
Mostly clear, with a low around 74.
Monday
 
A 40 percent chance of showers and thunderstorms. Sunny and hot, with a high near 97.
Monday Night
 
Mostly clear, with a low around 75.
Tuesday
 
A 40 percent chance of showers and thunderstorms. Sunny and hot, with a high near 98.

 

Forecast from NOAA-NWS for Hattiesburg MS.

Weather Forecast Discussion
449
FXUS64 KJAN 160806
AFDJAN

Area Forecast Discussion
National Weather Service Jackson MS
306 AM CDT Wed Jul 16 2025

...New DISCUSSION...

.DISCUSSION...
Issued at 306 AM CDT Wed Jul 16 2025

Dangerous levels of heat stress, and the potential for heavy
rainfall associated with a developing tropical system, continue to
be the primary concerns for this forecast.

Wednesday through Tuesday Night:

Today through Thursday:

Persistent dangerous heat with triple digit heat indices and humid
conditions will continue as the surface high remains over the
southeast CONUS. An areawide Heat Advisory will go effect at 10am
and continue until 7pm. Afternoon highs in the mid/upper 90s with
dewpoints in the mid 70s possibly reaching 80 degrees are expected.
While multiple areas across our entire forecast area will have the
best potential to see heat index readings in the 105-110 range,
there are a few isolated spots west of I-55 that could see heat
indices greater than 110 degrees. An "Elevated" heat risk will
continue to be advertised and another heat advisory may be needed
for Thursday. Rain chances will begin to increase across the area as
tropical moisture returns.

Friday through the weekend:

Concerning the potential for impacts from a developing tropical
system: the National Hurricane Center (NHC) continues to indicate a
medium probability (40%) for tropical cyclone development near the
northern Gulf Coast. With tropical moisture pushing into our region
and PWATs in the 90th to 99th percentiles, excessive rainfall will
be possible where convection can persist, but there has been a
westward shift in the flash flood threat. The Weather Prediction
Center (WPC) has shifted the "Slight" risk areas for excessive
rainfall west of the area, and much of the ensemble guidance
indicates the system will trend farther south with a heavy rainfall
axis primarily impacting LA while skirting our western and southern
areas. There had been a sizeable contingent of guidance that
eventually pulled the remnants into our area as we go into the
weekend, but this has trended less. In any case, forecast confidence
remains low in the whole scenario and we will continue to closely
monitor guidance trends.

Monday through Tuesday night:

Summertime conditions are expected to return as high pressure
progress into the southeast CONUS. Afternoon highs in the mid to
upper 90s with heat indices ranging between 105-110 degrees are
expected along with diurnal showers/storms driven by the heat.
SW/EC


&&

.AVIATION...
(06Z TAFS)
Issued at 1247 AM CDT Wed Jul 16 2025

VFR conditions and light surface wind will prevail through the
forecast period. /EC/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       97  76  93  75 /  10  10  60  10
Meridian      97  75  93  74 /  20  10  70  10
Vicksburg     97  77  96  76 /  10  10  40  20
Hattiesburg   98  76  92  76 /  40  40  90  30
Natchez       96  75  93  74 /  10  10  60  20
Greenville    96  76  97  76 /   0   0  10   0
Greenwood     98  77  98  76 /  10   0  20  10

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory from 10 AM this morning to 7 PM CDT this evening
     for MSZ018-019-025>066-072>074.

LA...Heat Advisory from 10 AM this morning to 7 PM CDT this evening
     for LAZ007>009-015-016-023>026.

AR...Heat Advisory from 10 AM this morning to 7 PM CDT this evening
     for ARZ074-075.

&&

$$

SW/EC
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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