FORT THOMPSON, SD 57339 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


CHAMBERLAIN, SD
Current Weather

1:15 PM CDT MAY 13, 2026
Clear
77°F
Feels Like: 77°F
Dewpoint: 34°F
Rel. Hum.: 21%
Visibility: 10 miles
Wind: SE at 5 mph
Pressure: 30.12 inches
Last 72 hours

Local Area Snow Depth

South Dakota Current Weather

South Dakota MOS Forecast Weather


Regional Weather Maps


(Automated weather data from NWS/FAA)
10-Day model forecast maps
2025 Hurricanes

FORT THOMPSON, SD 57339
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Sunny. Highs in the lower 80s. South winds 10 to 15 mph with gusts up to 25 mph.
TONIGHT
Partly cloudy and breezy. Not as cool with lows in the mid 50s. Southeast winds 15 to 25 mph with gusts up to 40 mph.
THURSDAY
Partly sunny and windy. Highs in the lower 80s. South winds 25 to 30 mph, becoming northwest 15 to 25 mph in the afternoon.
THURSDAY NIGHT
Mostly clear. Cooler with lows in the mid 40s. West winds 10 to 15 mph, diminishing to around 5 mph after midnight.
FRIDAY
Sunny. Highs around 80. West winds 15 to 20 mph with gusts up to 30 mph.
FRIDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s.
SATURDAY
Partly sunny. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent.
SATURDAY NIGHT
Partly cloudy with a chance of thunderstorms in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 40s. Chance of rain 50 percent.
SUNDAY AND SUNDAY NIGHT
Showers likely with a chance of thunderstorms. Breezy. Highs in the mid 70s. Lows in the mid 40s. Chance of rain 60 percent.
MONDAY
Mostly cloudy in the morning, then becoming partly sunny. A 40 percent chance of showers. Cooler with highs in the lower 60s.
MONDAY NIGHT
Mostly cloudy. A slight chance of showers in the evening. Lows in the upper 30s. Chance of rain 20 percent.
TUESDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 60s.

Visible Weather Satellite
FORT THOMPSON, SD 57339
Infrared Weather Satellite
FORT THOMPSON, SD 57339
NEXRAD Weather Radar
FORT THOMPSON, SD 57339

CHAMBERLAIN, SD 3 hourly weather forecast

weather forecast created  5:00 AM PDT  5/13/2026
Wednesday
13 MAY 2026
FORT THOMPSON, SD 57339 weather forecast Day 1, 12 hours 1 PM 75° 75° Clear 0%

0% Thunder
( 0% severe)
S   10 25% 37°
High 81° FORT THOMPSON, SD 57339 weather forecast Day 1, 15 hours 4 PM 79° 78° Clear SSE   13 23% 38°
Partly Cloudy



FORT THOMPSON, SD 57339 weather forecast Day 1, 18 hours 7 PM 80° 79° Partly Cloudy 0%

0% Thunder
( 2% severe)
SE   15 25% 41°
FORT THOMPSON, SD 57339 weather forecast Day 1, 21 hours 10 PM 69° 69° Partly Cloudy SE   16 35% 40°
Thursday
14 MAY 2026
FORT THOMPSON, SD 57339 weather forecast Day 2, 0 hours 1 AM 66° 66° Partly Cloudy 4%

0% Thunder
( 4% severe)
SSE   17 34% 37°
Low 54° FORT THOMPSON, SD 57339 weather forecast Day 2, 3 hours 4 AM 64° 62° Partly Cloudy SSE   21 37% 37°
High 84° FORT THOMPSON, SD 57339 weather forecast Day 2, 6 hours 7 AM 63° 61° Mostly Cloudy 3%

0% Thunder
( 3% severe)
S   21 44% 41°

Decreasing Clouds




Breezy
FORT THOMPSON, SD 57339 weather forecast Day 2, 9 hours 10 AM 70° 70° Mostly Cloudy SSW   22 44% 47°
FORT THOMPSON, SD 57339 weather forecast Day 2, 12 hours 1 PM 77° 78° Partly Cloudy 2%

0% Thunder
( 4% severe)
NW   17 32% 45°
FORT THOMPSON, SD 57339 weather forecast Day 2, 15 hours 4 PM 79° 78° Clear WNW   14 24% 39°
FORT THOMPSON, SD 57339 weather forecast Day 2, 18 hours 7 PM 78° 78° Partly Cloudy 1%

0% Thunder
( 3% severe)
WNW   8 23% 37°
FORT THOMPSON, SD 57339 weather forecast Day 2, 21 hours 10 PM 63° 64° Partly Cloudy NNW   3 36% 36°
Friday
15 MAY 2026
FORT THOMPSON, SD 57339 weather forecast Day 3, 0 hours 1 AM 56° 56° Partly Cloudy 0%

0% Thunder
( 1% severe)
  CALM 45% 35°
Low 44° FORT THOMPSON, SD 57339 weather forecast Day 3, 3 hours 4 AM 51° 51° Partly Cloudy WSW   2 50% 33°
High 82° FORT THOMPSON, SD 57339 weather forecast Day 3, 6 hours 7 AM 50° 48° Partly Cloudy 0%

0% Thunder
( 1% severe)
W   5 50% 32°

Clear



FORT THOMPSON, SD 57339 weather forecast Day 3, 9 hours 10 AM 66° 66° Clear WNW   12 30% 34°
FORT THOMPSON, SD 57339 weather forecast Day 3, 15 hours 1 PM 75° 75° Clear 0%

0% Thunder
( 3% severe)
WNW   13 21% 32°
FORT THOMPSON, SD 57339 weather forecast Day 3, 18 hours 4 PM 79° 78° Clear WNW   10 18% 32°
FORT THOMPSON, SD 57339 weather forecast Day 3, 21 hours 7 PM 79° 78° Partly Cloudy     NNW   8 20% 34°

CHAMBERLAIN, SD extended weather forecast

Saturday
16 MAY 2026
Sunday
17 MAY 2026
Monday
18 MAY 2026
Tuesday
19 MAY 2026
Wednesday
20 MAY 2026
Low 46° Low 51° Low 54° Low 42° Low 45°
High 79° High 71° High 59° High 64° High 71°
FORT THOMPSON, SD 57339 weather forecast Day 4 FORT THOMPSON, SD 57339 weather forecast Day 5 FORT THOMPSON, SD 57339 weather forecast Day 6 FORT THOMPSON, SD 57339 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Clear
10% Rain
Overcast
54% Rain
Overcast
89% Rain
Mostly Cloudy
48% Rain
Partly Cloudy
31% Rain
WEATHER SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:
Fort Thompson, SD
Fort Thompson, SD snow
Fort Thompson, SD radar
SD map
-or-
-or-
-or-
 
57339
57339 snow
57339 radar
 
-or-
-or-
 
 
SD
SD snow
 
 
Copyright © 2024 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions