Dewey County, SD Weather Forecast
County weather hub
Cloudy
Compare major city weather across Dewey County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Cloudy. Low around 33, with temperatures rising to around 36 overnight. Northwest wind 22 to 36 mph, with gusts as high as 49 mph.
County Weather Overview
This county weather page brings together forecast coverage for Dewey County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Dewey County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 15 to Oct 22, 2026
- Latest sync
- Oct 16, 2026 12:39 AM MDT
- Forecast office
- ABR
- Source
- NOAA / NWS
Daily Outlook
This Week in Dewey County
Wednesday looks like the warmest upcoming period in Dewey County at 69 degrees F.
Tonight is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Tonight at about 22 to 36 mph NW.
The forecast from Oct 15 through Oct 22 stays mostly dry.
Forecast Details
- Last updated
- Oct 16, 2026 12:39 AM MDT
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- ABR
- Radar station
- KBIS
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny, with a high near 50. West wind 7 to 17 mph, with gusts as high as 25 mph.
Clear, with a low around 37. South wind 10 to 21 mph, with gusts as high as 29 mph.
Sunny, with a high near 66. South wind 9 to 14 mph.
Mostly clear, with a low around 42. South southwest wind 5 to 8 mph.
Sunny, with a high near 66. North wind 8 to 20 mph, with gusts as high as 30 mph.
Mostly clear, with a low around 39. Northeast wind around 8 mph.
Sunny, with a high near 62. East southeast wind 6 to 14 mph.
Mostly clear, with a low around 44. Southeast wind around 12 mph.
Sunny, with a high near 67.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 69.
Partly cloudy, with a low around 49.
Mostly sunny, with a high near 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 15
|
Cloudy
|
33°F |
22 to 36 mph
NW
|
|
Friday
Oct 16
|
Sunny
|
50°F |
7 to 17 mph
W
|
|
Friday Night
Oct 16
|
Clear
|
37°F |
10 to 21 mph
S
|
|
Saturday
Oct 17
|
Sunny
|
66°F |
9 to 14 mph
S
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
42°F |
5 to 8 mph
SSW
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
8 to 20 mph
N
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
39°F |
8 mph
NE
|
|
Monday
Oct 19
|
Sunny
|
62°F |
6 to 14 mph
ESE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
44°F |
12 mph
SE
|
|
Tuesday
Oct 20
|
Sunny
|
67°F |
12 to 20 mph
SE
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
49°F |
13 to 16 mph
SE
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
69°F |
9 to 14 mph
SSE
|
|
Wednesday Night
Oct 21
|
Partly Cloudy
|
49°F |
8 mph
SE
|
|
Thursday
Oct 22
|
Mostly Sunny
|
68°F |
8 to 16 mph
SE
|
Major City Forecasts
Live forecast snapshots for major cities across Dewey County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Dewey County.
Largest mapped city population in this region: 1,418.
