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Watertown, SD Weather Forecast

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Watertown, SD Weather Forecast

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Watertown SD weather - Overcast - 51°F
Overcast
51°F
Updated 6:47 am
Feels Like 46°F
Humidity 92%
Wind ESE 5 mph
Barometer  30.27 in
Dew Point 49°F
Watertown SD weather - Overcast - 11°C
Overcast
11°C
Updated 6:47 am
Feels Like 8°C
Humidity 92%
Wind ESE 8 km/h
Barometer  102.5 kPa
Dew Point 9°C
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Watertown Weather Forecast

TODAY TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT
Watertown, SD Weather - Today Mostly Cloudy Watertown, SD Weather - Tonight Partly Cloudy Watertown, SD Weather - Wednesday Chance Of Showers Watertown, SD Weather - Wednesday Night Chance Of T-Storm Watertown, SD Weather - Thursday Mostly Cloudy Watertown, SD Weather - Thursday Night Chance Of Showers Watertown, SD Weather - Friday Chance Of Showers Watertown, SD Weather - Friday Night Chance Of T-Storm Watertown, SD Weather - Saturday Chance Of T-Storm Watertown, SD Weather - Saturday Night Chance Of Showers Watertown, SD Weather - Sunday Partly Sunny Watertown, SD Weather - Sunday Night Chance Of Showers
Mostly Cloudy Partly Cloudy Chance of Showers Chance of T-Storm Mostly Cloudy Chance of Showers Chance of Showers Chance of T-Storm Chance of T-Storm Chance of Showers Partly Sunny Chance of Showers
Hi: 60°FHi: 16°C
 Lo: 49°FLo: 9°C Hi: 61°FHi: 16°C
 Lo: 51°FLo: 11°C Hi: 69°FHi: 21°C
 Lo: 55°FLo: 13°C Hi: 65°FHi: 18°C
 Lo: 55°FLo: 13°C Hi: 69°FHi: 21°C
 Lo: 55°FLo: 13°C Hi: 70°FHi: 21°C
 Lo: 55°FLo: 13°C
POP: 20% POP: 90% POP: 20% POP: 50% POP: 60% POP: 20% POP: 20% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 522 AM CDT Tue Sep 22 2026 Watertown, SD Weather - WeatherWorld.com

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Issued: 644 AM CDT Tue Sep 22 2026

Key Messages

  • Spotty rain showers (30-55%) return this evening through Wednesday morning across central South Dakota. Additional rain (60-90%) is expected Wednesday morning through Thursday morning. Chance of rainfall of a quarter inch or more is 40-80%, highest east of the James River through western MN.
  • Occasional rain chances continue for the end of the week with the best chances (40-65%) occurring Friday through Saturday morning.
  • Temperatures will remain near to slightly below seasonal average...