What is today's weather forecast for Fort Thompson, SD?

Today's forecast for Fort Thompson shows a high of 39 degrees and a low of 25 degrees Fahrenheit. Patchy fog before 11am.

What is the 7-day weather forecast for Fort Thompson, SD?

The 7-day forecast for Fort Thompson shows highs from 12 to 50 degrees and lows from -1 to 25 degrees Fahrenheit. Expect precipitation on 5 days with chances of 20% or higher.

Will it rain in Fort Thompson, SD this week?

Yes, rain is possible in Fort Thompson this week. Precipitation chances: Tuesday (20% chance), Wednesday (40% chance), Thursday (30% chance), Friday (20% chance), Saturday (30% chance).

How accurate is the Fort Thompson weather forecast?

WeatherForYou provides highly accurate Fort Thompson forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Fort Thompson, SD Weather Forecast and Current Conditions

WEATHER ALERTS - High Wind Watch

Current Conditions

Switch to Metric Units

16°F
Feels Like 16°F

Humidity 67% Dew Point 7°F Wind W 1 MPH Gusts 2 Barometer 29.8 in.

Solar Rad 23 w/m²

Report from a personal weather station 18.3 mi. SSE of central Fort Thompson
at 4:57 AM Mon, Dec 8, 2025

Point Forecast at a Glance

MonDec 8

TueDec 9

20%

WedDec 10

ThuDec 11

30%

FriDec 12

20%

-1

SatDec 13

30%

SunDec 14

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures start near 39°F, reaching 50°F before cooling to 12°F, then recovering to 26°F by week's end. Unsettled weather expected with snow likely on at least 5 days.

Climate Context

This week's forecast shows temperatures running 4°F below the historical average for December. Normal highs for this period are around 32°F with lows around 11°F.

This Date in Weather History

1892 - A tremendous ice fall occurred at Gay Hill, TX. Ice averaged four to six inches in diameter.

Fort Thompson, SD 7 Day Weather Forecast Details

Monday Dec 8

Day: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 39. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 23 mph.

Night: Mostly cloudy, with a low around 25. West northwest wind 7 to 10 mph.

Tuesday Dec 9

Day: A slight chance of rain after 10am. Mostly cloudy, with a high near 50. Windy, with a south southwest wind 7 to 12 mph becoming west 20 to 30 mph in the afternoon. Winds could gust as high as 48 mph. Chance of precipitation is 20%.

Night: Mostly cloudy, with a low around 20. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 47 mph.

Wednesday Dec 10

Day: Partly sunny, with a high near 29. Northwest wind 8 to 14 mph becoming east northeast in the afternoon. Winds could gust as high as 22 mph.

Night: A chance of snow. Cloudy, with a low around 16. East southeast wind 8 to 10 mph. Chance of precipitation is 40%.

Thursday Dec 11

Day: A chance of snow. Mostly cloudy, with a high near 29. East wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 30%.

Night: A chance of snow. Mostly cloudy, with a low around 3. North northwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

Friday Dec 12

Day: A slight chance of snow before noon. Mostly cloudy, with a high near 12. North northwest wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Night: Mostly cloudy, with a low around -1.

Saturday Dec 13

Day: A chance of snow. Mostly cloudy, with a high near 13. Chance of precipitation is 30%.

Night: Mostly cloudy, with a low around 1.

Sunday Dec 14

Day: Mostly sunny, with a high near 26.

About Fort Thompson, SD

Fort Thompson (Lakota/ Dakota: Čhúŋkičakse) is a census-designated place (CDP) in Buffalo County, South Dakota, United States. The population was 1,282 at the 2010 census, making it the largest settlement on the Crow Creek Reservation. Fort Thompson was named in honor of Clark W. Thompson, superintendent of Indian Affairs.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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