Skip to main content
Local Weather Radar Official LogoLocal Weather Radar Official Logo
Plan your week in Dewey County with our detailed 7-Day Weather Forecast. Access reliable daily temperature highs and lows, rain chances, and weekly weather pattern summaries.

Dewey County 7-Day Weather Forecast

Saturday, Oct 24, 2026

Nighttime
64°F

Rainy

Feels like 64°F

Humidity

47%

Wind Speed

9.4 mph

Precipitation

0 in

Pressure

1009 hPa

UV Index

0

Visibility

10 mi

Cloud Cover

72%

Dew Point

55°F

7-Day Weather Forecast

Today

Oct 24

Rainy
65°H
46°L
39%

Sun

Oct 25

Rainy
48°H
41°L
21%

Mon

Oct 26

Rainy
42°H
38°L
60%

Tue

Oct 27

Rainy
42°H
33°L
0%

Wed

Oct 28

Rainy
53°H
35°L
0%

Thu

Oct 29

Rainy
62°H
44°L
0%

Fri

Oct 30

Rainy
66°H
44°L
0%

24-Hour Forecast

5 AM

64°

39%

6 AM

61°

0%

7 AM

65°

0%

8 AM

62°

0%

9 AM

54°

0%

10 AM

50°

0%

11 AM

47°

0%

12 PM

47°

0%

1 PM

46°

0%

2 PM

46°

0%

3 PM

46°

0%

4 PM

48°

0%

5 PM

50°

0%

6 PM

52°

0%

7 PM

54°

0%

8 PM

55°

0%

9 PM

55°

0%

10 PM

55°

0%

11 PM

53°

0%

12 AM

48°

0%

1 AM

46°

0%

2 AM

46°

0%

3 AM

45°

0%

4 AM

44°

0%

Air Quality (AQI)

31Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5

1.1 µg/m³

PM10

1.6 µg/m³

Sun & Moon Phase

Sunrise

6:00 AM

Sunset

8:00 PM

Moon Phase

Waxing Gibbous

Waxing Gibbous

Wind Conditions & Storm Tracking

Wind Direction

222.1° SW

Sustained Wind

9.4 mph

Wind Gusts

9.4 mph

7-Day Temp Range

Week's Hottest

66°F

Max Rain Prob

60%

Expected 7-Day Swings

33°
66°

High and low limits expected over the next week.

Extended Local Forecasts

14 Day Weather Forecast7 Day Weather ForecastHourly Weather Tracker

Location View

Dewey County · 44.48°N, 101.04°W
Radar Page
Coordinates44.4802°N, 101.0401°W
Elevationm
TimezoneAmerica/New_York

Nearby Cities in South Dakota

More weather updates in South Dakota

Explore all weather stations, radar maps, and localized forecasts.

Explore All South Dakota Stations

Safety & Environmental Index

MetricValueStatus / Interpretation
Air Quality (AQI)31Good
UV Index0Low Risk
Visibility10 milesClear

Frequently Asked Questions

The 7-day forecast for Dewey County includes comprehensive daily weather summaries, max/min temperatures, and expected rainfall to keep you prepared for the week.

About Dewey County Climate & Weather

Weather forecast for Dewey County is powered by high-resolution weather models using open-source infrastructure. Check current temperatures, rain radar graphs, hourly wind speeds, humidity values, and ultraviolet indexes directly from our weather tracking console.

Meteorological Data: Weather data for this area is aggregated from global and regional forecast models (GFS, HRRR, ERA5) and updated continuously every hour.