Westerville, SD Weather Forecast

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Westerville, SD Weather Forecast

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Westerville SD weather  - Mist - 64°F
Mist
64°F
Updated 2:44 am
Feels Like 70°F
Humidity 100%
Wind N 0 mph
Barometer  29.88 in
Dew Point 64°F
Westerville SD weather  - Mist - 18°C
Mist
18°C
Updated 2:44 am
Feels Like 21°C
Humidity 100%
Wind N 0 km/h
Barometer  101.2 kPa
Dew Point 18°C

Westerville Weather Forecast

REST OF TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY
Westerville, SD Weather - Rest Of Tonight Patchy Fog Westerville, SD Weather - Tuesday Clearing Westerville, SD Weather - Tuesday Night Partly Cloudy Westerville, SD Weather - Wednesday Partly Sunny Westerville, SD Weather - Wednesday Night Chance Of Showers Westerville, SD Weather - Thursday Chance Of Showers Westerville, SD Weather - Thursday Night Chance Of T-Storm Westerville, SD Weather - Friday Chance Of T-Storm Westerville, SD Weather - Friday Night Chance Of T-Storm Westerville, SD Weather - Saturday Mostly Cloudy Westerville, SD Weather - Saturday Night Partly Cloudy Westerville, SD Weather - Sunday Partly Sunny
Patchy Fog Clearing Partly Cloudy Partly Sunny Chance of Showers Chance of Showers Chance of T-Storm Chance of T-Storm Chance of T-Storm Mostly Cloudy Partly Cloudy Partly Sunny
Lo: 55°FLo: 13°C Hi: 71°FHi: 22°C
Lo: 51°FLo: 11°C Hi: 70°FHi: 21°C
Lo: 59°FLo: 15°C Hi: 75°FHi: 24°C
Lo: 61°FLo: 16°C Hi: 81°FHi: 27°C
Lo: 61°FLo: 16°C Hi: 75°FHi: 24°C
Lo: 55°FLo: 13°C Hi: 70°FHi: 21°C
POP: 20% POP: 50% POP: 90% POP: 70% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 133 AM CDT Tue Sep 15 2026 Westerville, SD Weather - WeatherWorld.com

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Issued: 1255 AM CDT Tue Sep 15 2026

Key Messages

  • Dense fog continues early this morning in east-central South Dakota and adjacent areas of southwest Minnesota. Fog should dissipate by 4-5 am as drier air moves in.
  • A few additional thunderstorms may develop into early this morning along Highway 20, capable of mainly small hail. There is a very low (5% or less) chance of a quarter sized hailstone in the strongest storms.
  • Near normal temperatures continues the rest of the week with low rain chances on Wednesday, but significantly high...