Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM Extreme Heat Warning — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Heat Advisory — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM

Walthall County, Mississippi, United States

Last updated: 6:24 PM CDT  ·  Refresh
25°C
Feels like 27°
Heavy Rain
▲ 36°  /  ▼ 22°
Wind
9 mph S
Humidity
84%
Dew Point
23°
Pressure
29.67 inHg
Visibility
1 mi
UV Index
1.0
Cloud Cover
99%
Sunrise
6:30 AM
Sunset
7:36 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Walthall County is currently heavy rain at 25°C. Precipitation is likely — peak probability 73% around 6 PM. Atmospheric instability is elevated (CAPE up to 2820 J/kg) — isolated convective development possible. Sunrise: 6:30AM · Sunset: 7:36PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Extreme Heat Warning
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
Heat Advisory
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
42 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
72%
7 PM
27°
64%
8 PM
27°
69%
9 PM
24°
48%
10 PM
24°
28%
11 PM
24°
28%
12 AM
24°
20%
1 AM
24°
4%
2 AM
24°
4%
3 AM
24°
4%
4 AM
23°
4%
5 AM
22°
4%
6 AM
22°
3%
7 AM
23°
3%
8 AM
25°
3%
9 AM
28°
3%
10 AM
29°
3%
11 AM
31°
3%
12 PM
32°
3%
1 PM
34°
3%
2 PM
35°
3%
3 PM
35°
3%
4 PM
34°
5%
5 PM
34°
6%
7-Day Forecast
Tonight
36° 22°
Heavy Rain, 72% chance.
Sat
37° 22°
Partly Cloudy with a 20% chance of rain.
Sun
37° 24°
Partly Cloudy with a 37% chance of rain.
Mon
33° 23°
Mostly Cloudy with a 55% chance of rain.
Tue
36° 23°
Partly Cloudy with a 44% chance of rain.
Wed
34° 23°
Heavy Rain, 83% chance.
Thu
33° 22°
Rain, 67% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Heavy Rain 72% 9 mph S 84%
7 PM 27° Rain 64% 6 mph SSW 87%
8 PM 27° Heavy Rain 69% 6 mph S 90%
9 PM 24° Overcast 48% 5 mph SSW 92%
10 PM 24° Overcast 28% 5 mph SW 94%
11 PM 24° Overcast 28% 4 mph SW 94%
12 AM 24° Overcast 20% 4 mph SW 95%
1 AM 24° Overcast 4% 4 mph WSW 96%
2 AM 24° Overcast 4% 4 mph WSW 96%
3 AM 24° Overcast 4% 4 mph WSW 96%
4 AM 23° Overcast 4% 4 mph WSW 96%
5 AM 22° Overcast 4% 3 mph W 95%
6 AM 22° Overcast 3% 3 mph W 95%
7 AM 23° Overcast 3% 3 mph WNW 91%
8 AM 25° Mostly Cloudy 3% 3 mph NW 84%
9 AM 28° Partly Cloudy 3% 4 mph NW 75%
10 AM 29° Partly Cloudy 3% 4 mph NW 68%
11 AM 31° Partly Cloudy 3% 3 mph NNW 61%
12 PM 32° Partly Cloudy 3% 3 mph N 54%
1 PM 34° Partly Cloudy 3% 3 mph NNE 50%
2 PM 35° Partly Cloudy 3% 3 mph NNE 48%
3 PM 35° Mostly Clear 3% 4 mph NE 46%
4 PM 34° Mostly Clear 5% 4 mph NE 46%
5 PM 34° Mostly Clear 6% 3 mph ENE 50%
15-Day Forecast
Today
8/21
Heavy Rain
72%
22°
36°
Sat
8/22
Partly Cloudy
20%
22°
37°
Sun
8/23
Partly Cloudy
37%
24°
37°
Mon
8/24
Mostly Cloudy
55%
23°
33°
Tue
8/25
Partly Cloudy
44%
23°
36°
Wed
8/26
Heavy Rain
83%
23°
34°
Thu
8/27
Rain
67%
22°
33°
Fri
8/28
Drizzle
57%
23°
35°
Sat
8/29
Thunderstorm
66%
23°
36°
Sun
8/30
Drizzle
47%
22°
36°
Mon
8/31
Clear
32%
23°
36°
Tue
9/1
Drizzle
60%
23°
37°
Wed
9/2
Drizzle
60%
23°
37°
Thu
9/3
Drizzle
60%
23°
37°
Fri
9/4
Drizzle
60%
22°
36°
42
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
42 AQI 7.5 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 42 Good 34 42
Sun 41 Good 37 41
Mon 53 Moderate 36 53
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Aug 21, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE731 J/kg
MLCAPE2158 J/kg
MUCAPE5044 J/kg
SBCIN-280 J/kg
MLCIN-123 J/kg
Lifted Index-3.8
Kinematics
0–6 km Shear20 kt
0–1 km Shear16 kt
Eff. Shear9 kt
0–1 km SRH70
0–3 km SRH60
Eff. SRH23
Storm Motion42° @ 15 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index44.7
Thermo & Levels
PWAT2.59 in
0–3 km LR4.9 °C/km
700–500 LR6.2 °C/km
Total Totals53.4
LCL968 hPa
LFC723 hPa
EL215 hPa
Freezing Lvl14,364 ft