Fall River County, SD Weather Forecast
County weather hub
Mostly Sunny then Slight Chance Showers And Thunderstorms
Compare major city weather across Fall River County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 71.
County Weather Overview
This county weather page brings together forecast coverage for Fall River 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 Fall River County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 8 to May 10, 2026
- Latest sync
- May 4, 2026 2:33 PM MDT
- Forecast office
- UNR
- Source
- NOAA / NWS
Daily Outlook
This Week in Fall River County
Friday looks like the warmest upcoming period in Fall River County at 71 degrees F.
Saturday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Friday at about 9 to 21 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- May 4, 2026 2:33 PM MDT
- Coverage
- 4 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 slight chance of rain showers after midnight. Partly cloudy, with a low around 43.
A slight chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 69.
A chance of showers and thunderstorms. Partly cloudy, with a low around 42.
A slight chance of rain showers before noon, then a chance of showers and thunderstorms. Mostly sunny, with a high near 70.
Partly cloudy, with a low around 43.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
May 8
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
71°F |
9 to 21 mph
NW
|
|
Friday Night
May 8
|
Partly Cloudy then Slight Chance Rain Showers
|
43°F |
5 to 16 mph
NE
|
|
Saturday
May 9
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
69°F |
6 to 20 mph
N
|
|
Saturday Night
May 9
|
Chance Showers And Thunderstorms
|
42°F |
8 to 17 mph
N
|
|
Sunday
May 10
|
Chance Showers And Thunderstorms
|
70°F |
9 to 13 mph
N
|
|
Sunday Night
May 10
|
Partly Cloudy
|
43°F |
6 to 10 mph
NW
|
Major City Forecasts
Live forecast snapshots for major cities across Fall River County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Fall River County.
Largest mapped city population in this region: 3,502.
