Fall River County, SD Weather Forecast
County weather hub
Sunny
Compare major city weather across Fall River County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 97. East wind around 15 mph, with gusts as high as 26 mph.
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
- Jul 18 to Jul 24, 2026
- Latest sync
- Jul 18, 2026 1:59 PM MDT
- Forecast office
- UNR
- Source
- NOAA / NWS
Daily Outlook
This Week in Fall River County
Sunday looks like the warmest upcoming period in Fall River County at 102 degrees F.
Thursday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Monday Night at about 14 to 21 mph NE.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 18, 2026 1:59 PM MDT
- Coverage
- 8 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
Partly cloudy, with a low around 71. East wind 7 to 15 mph, with gusts as high as 26 mph.
Sunny, with a high near 102. South wind 6 to 13 mph, with gusts as high as 24 mph.
Mostly clear, with a low around 71. South wind 7 to 14 mph, with gusts as high as 25 mph.
Sunny, with a high near 99. North wind 7 to 20 mph, with gusts as high as 32 mph.
Partly cloudy, with a low around 67. Northeast wind 14 to 21 mph, with gusts as high as 33 mph.
Mostly sunny, with a high near 90.
A chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 66.
A chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 92.
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
A slight chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 89.
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
A slight chance of rain showers before noon, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88.
A chance of showers and thunderstorms. Mostly clear, with a low around 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 18
|
Sunny
|
97°F |
15 mph
E
|
|
Tonight
Jul 18
|
Partly Cloudy
|
71°F |
7 to 15 mph
E
|
|
Sunday
Jul 19
|
Sunny
|
102°F |
6 to 13 mph
S
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
71°F |
7 to 14 mph
S
|
|
Monday
Jul 20
|
Sunny
|
99°F |
7 to 20 mph
N
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
67°F |
14 to 21 mph
NE
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
90°F |
13 to 18 mph
E
|
|
Tuesday Night
Jul 21
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
66°F |
15 to 20 mph
E
|
|
Wednesday
Jul 22
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
92°F |
16 to 21 mph
E
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms
|
65°F |
8 to 21 mph
E
|
|
Thursday
Jul 23
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
89°F |
8 to 16 mph
E
|
|
Thursday Night
Jul 23
|
Chance Showers And Thunderstorms
|
64°F |
6 to 16 mph
E
|
|
Friday
Jul 24
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
88°F |
6 to 16 mph
E
|
|
Friday Night
Jul 24
|
Chance Showers And Thunderstorms
|
66°F |
7 to 16 mph
E
|
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.
