Pennington County, SD Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across Pennington County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy, with a low around 39. North wind around 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Pennington County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Pennington County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 13 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 9:29 PM MDT
- Forecast office
- UNR
- Source
- NOAA / NWS
Daily Outlook
This Week in Pennington County
Saturday looks like the warmest upcoming period in Pennington County at 77 degrees F.
Thursday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Thursday at about 14 to 31 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 9:29 PM MDT
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- UNR
- Radar station
- KUDX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers after 9am. Partly sunny. High near 56, with temperatures falling to around 53 in the afternoon. Northeast wind 2 to 6 mph. Chance of precipitation is 40%.
Rain. Cloudy. Low around 41, with temperatures rising to around 43 overnight. Northeast wind 2 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Mostly sunny. High near 60, with temperatures falling to around 57 in the afternoon. Northwest wind 14 to 31 mph, with gusts as high as 46 mph.
Widespread frost after 3am. Clear, with a low around 30. Northwest wind 6 to 25 mph, with gusts as high as 43 mph.
Widespread frost before 8am. Sunny. High near 63, with temperatures falling to around 60 in the afternoon. Southwest wind 5 to 23 mph, with gusts as high as 36 mph.
Clear, with a low around 38.
Sunny, with a high near 77.
Mostly clear, with a low around 44.
Sunny, with a high near 70.
Mostly clear, with a low around 39.
Sunny, with a high near 74.
Mostly clear, with a low around 45.
Sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 13
|
Mostly Cloudy
|
39°F |
5 mph
N
|
|
Wednesday
Oct 14
|
Chance Rain Showers
|
56°F |
2 to 6 mph
NE
|
|
Wednesday Night
Oct 14
|
Light Rain
|
41°F |
2 to 9 mph
NE
|
|
Thursday
Oct 15
|
Mostly Sunny
|
60°F |
14 to 31 mph
NW
|
|
Thursday Night
Oct 15
|
Clear then Widespread Frost
|
30°F |
6 to 25 mph
NW
|
|
Friday
Oct 16
|
Widespread Frost then Sunny
|
63°F |
5 to 23 mph
SW
|
|
Friday Night
Oct 16
|
Clear
|
38°F |
13 to 21 mph
S
|
|
Saturday
Oct 17
|
Sunny
|
77°F |
5 to 10 mph
S
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
44°F |
5 to 10 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
70°F |
8 to 18 mph
N
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
39°F |
6 mph
W
|
|
Monday
Oct 19
|
Sunny
|
74°F |
6 to 16 mph
S
|
|
Monday Night
Oct 19
|
Mostly Clear
|
45°F |
14 mph
S
|
|
Tuesday
Oct 20
|
Sunny
|
76°F |
12 to 20 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Pennington County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Pennington County.
Largest mapped city population in this region: 77,503.
