Foster, SD Weather Forecast

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Foster, SD Weather Forecast

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Foster SD weather  - Mostly Clear - 74°F
Mostly Clear
74°F
Updated 10:26 pm
Feels Like 76°F
Humidity 90%
Wind WNW 6 mph
Barometer  29.77 in
Dew Point 71°F
Foster SD weather  - Mostly Clear - 23°C
Mostly Clear
23°C
Updated 10:26 pm
Feels Like 25°C
Humidity 90%
Wind WNW 10 km/h
Barometer  100.8 kPa
Dew Point 22°C

Foster Weather Forecast

REST OF TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY
Foster, SD Weather - Rest Of Tonight Mostly Cloudy Foster, SD Weather - Tuesday Mostly Sunny Foster, SD Weather - Tuesday Night Partly Cloudy Foster, SD Weather - Wednesday Mostly Sunny Foster, SD Weather - Wednesday Night Mostly Clear Foster, SD Weather - Thursday Sunny Foster, SD Weather - Thursday Night Mostly Clear Foster, SD Weather - Friday Mostly Clear Foster, SD Weather - Friday Night Partly Cloudy Foster, SD Weather - Saturday Partly Sunny Foster, SD Weather - Saturday Night Chance Of Showers Foster, SD Weather - Sunday Chance Of Showers
Mostly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny Mostly Clear Sunny Mostly Clear Mostly Clear Partly Cloudy Partly Sunny Chance of Showers Chance of Showers
Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
Lo: 55°FLo: 13°C Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C Hi: 85°FHi: 29°C
Hi: 81°FHi: 27°C
Lo: 59°FLo: 15°C
Hi: 81°FHi: 27°C
Lo: 59°FLo: 15°C
Lo: 51°FLo: 11°C Hi: 71°FHi: 22°C
Hi: 65°FHi: 18°C
Lo: 49°FLo: 9°C
Hi: 65°FHi: 18°C
Lo: 49°FLo: 9°C
POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 1117 PM CDT Mon Sep 07 2026 Foster, SD Weather - WeatherWorld.com

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Issued: 616 PM CDT Mon Sep 7 2026

Key Messages

  • There is a Marginal risk (level 1 out of 5) for severe storms over northeast SD and west central MN tonight. The primary hazards will be 1.75 inch in diameter hail and 60 mph wind gusts.
  • Northwest wind 15 to 25 mph with gusts of 30 to 40 mph, low relative humidity, and dry cured fuels will create elevated fire weather conditions mainly over north central SD on Tuesday.
  • There is a 20-45 percent chance of 0.25in or more of rainfall Saturday night into Sunday and again Sunday night into...