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Dewey, SD Weather Forecast

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Dewey, SD Weather Forecast

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Dewey SD weather - Clear - 53°F
Clear
53°F
Updated 8:59 pm
Feels Like 58°F
Humidity 58%
Wind E 13 mph
Barometer  30.16 in
Dew Point 39°F
Dewey SD weather - Clear - 12°C
Clear
12°C
Updated 8:59 pm
Feels Like 14°C
Humidity 58%
Wind E 21 km/h
Barometer  102.1 kPa
Dew Point 4°C
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Dewey Weather Forecast

REST OF TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY
Dewey, SD Weather - Rest Of Tonight Partly Cloudy Dewey, SD Weather - Sunday Partly Cloudy Dewey, SD Weather - Sunday Night Chance Of T-Storm Dewey, SD Weather - Monday Clearing Dewey, SD Weather - Monday Night Clear Dewey, SD Weather - Tuesday Mostly Sunny Dewey, SD Weather - Tuesday Night Chance Of Showers Dewey, SD Weather - Wednesday Clearing Dewey, SD Weather - Wednesday Night Chance Of T-Storm Dewey, SD Weather - Thursday Chance Of Showers Dewey, SD Weather - Thursday Night Chance Of Showers Dewey, SD Weather - Friday Clearing
Partly Cloudy Partly Cloudy Chance of T-Storm Clearing Clear Mostly Sunny Chance of Showers Clearing Chance of T-Storm Chance of Showers Chance of Showers Clearing
Lo: 51°FLo: 11°C Hi: 71°FHi: 22°C
 Lo: 59°FLo: 15°C Hi: 75°FHi: 24°C
 Lo: 45°FLo: 7°C Hi: 69°FHi: 21°C
 Lo: 51°FLo: 11°C Hi: 75°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 69°FHi: 21°C
 Lo: 51°FLo: 11°C Hi: 71°FHi: 22°C
POP: 70% POP: 20% POP: 30% POP: 30% POP: 40% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 817 PM MDT Sat Sep 12 2026 Dewey, SD Weather - WeatherWorld.com

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Dewey Forecast Discussion

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Issued: 527 PM MDT Sat Sep 12 2026

Key Messages

  • Cool temperatures for the remainder of the weekend
  • Rainfall chances overnight looking a little less likely, with better chances coming Sunday night
  • Seasonal temperatures through the week, with rainfall chances returning by midweek.

Discussion

...(This Evening Through Saturday) Issued at 1237 PM MDT Sat Sep 12 2026

Latest water vapor imagery shows broad upper high pressure located across the southern tier of the country with a digging 500hpa low off of the Pacific NW coast. Quick moving ...