How is the weather in Fort Thompson, SD?

At 3:53 AM on Mon, Sep 8, 2025 it is clear and 65 degrees Fahrenheit, feeling like 65 degrees.

Fort Thompson, SD Weather Forecast and Current Conditions (57339)

65°F
Feels Like 65°F

Humidity 72% Dew Point 56°F Wind Calm 0 MPH Gusts 2 Barometer 29.65 in.753.1 mm

Solar Rad 31 w/m2 UV Index 0

Report from 18.3 miles SSE of central Fort Thompson at 3:53 AM Mon, Sep 8, 2025

Current Weather

65°F
Feels Like 65°F

Humidity 72% Dew Point 56°F Wind Calm 0 MPH Gusts 2 Barometer 29.65 in.753.1 mm

Solar Rad 31 w/m2 UV Index 0

Report from 18.3 miles SSE of central Fort Thompson at 3:53 AM Mon, Sep 8, 2025

Forecast at a Glance

MonSep 8

89°

60°

TueSep 9

88°

60°

WedSep 10

10%

85°

62°

ThuSep 11

10%

88°

66°

FriSep 12

20%

89°

64°

SatSep 13

40%

87°

61°

SunSep 14

40%

81°

This Date in Weather History

1988 - Eighteen cities in the south central and eastern U.S. reported record low temperatures for the date, including Roanoke VA with a reading of 42 degrees.

Fort Thompson 7 Day Weather Forecast Details

Monday Sep 8

Day: Mostly sunny, with a high near 89. South wind 7 to 10 mph.

Night: Patchy fog between 3am and 4am. Mostly cloudy. Low around 60, with temperatures rising to around 63 overnight. South wind 5 to 8 mph.

Tuesday Sep 9

Day: Patchy fog between 8am and 9am. Sunny, with a high near 88. North northwest wind 5 to 9 mph.

Night: Mostly clear, with a low around 60. East northeast wind around 9 mph.

Wednesday Sep 10

Day: Mostly sunny, with a high near 85. East southeast wind 7 to 17 mph.

Night: Partly cloudy, with a low around 62. Southeast wind 14 to 17 mph.

Thursday Sep 11

Day: Mostly sunny, with a high near 88. Southeast wind 14 to 18 mph, with gusts as high as 28 mph.

Night: A slight chance of rain showers between 7pm and 1am. Mostly cloudy, with a low around 66. Southeast wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

Friday Sep 12

Day: A slight chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 89. Chance of precipitation is 20%.

Night: A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

Saturday Sep 13

Day: A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 40%.

Night: A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.

Sunday Sep 14

Day: A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 40%.

Sun & Moon Monthly

First Light 6:41 AM

Sunrise 7:10 AM

Sunset 8:03 PM

Last Light 8:32 PM

Moonrise 8:23 PM

Moonset 8:04 AM

Moon Phase

Airport Delays - Check over 300 airports

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