Fallon County, MT Weather Forecast
County weather hub
Partly Sunny then Showers And Thunderstorms
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Showers and thunderstorms after noon. Partly sunny. High near 84, with temperatures falling to around 80 in the afternoon. Southeast wind around 20 mph. Chance of precipitation is 80%.
County Weather Overview
This county weather page brings together forecast coverage for Fallon County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 0 of 0 mapped cities in Fallon County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 30 to Jun 3, 2026
- Latest sync
- May 28, 2026 4:26 AM MDT
- Forecast office
- BYZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Fallon County
Saturday looks like the warmest upcoming period in Fallon County at 84 degrees F.
Sunday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Saturday at about 20 mph SE.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- May 28, 2026 4:26 AM MDT
- Coverage
- 5 days
- Time zone
- America/Denver
- Forecast office
- BYZ
- Radar station
- KGGW
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. Southeast wind 12 to 20 mph. Chance of precipitation is 60%.
A chance of rain showers before noon, then showers and thunderstorms likely. Partly sunny. High near 77, with temperatures falling to around 74 in the afternoon. South southwest wind 10 to 16 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 49. West wind 8 to 16 mph. Chance of precipitation is 30%.
A chance of rain showers after noon. Partly sunny. High near 72, with temperatures falling to around 70 in the afternoon. West southwest wind around 10 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 50. North northeast wind 6 to 12 mph. Chance of precipitation is 30%.
A slight chance of rain showers after noon. Mostly sunny, with a high near 75. West wind 7 to 10 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. East wind 6 to 12 mph. Chance of precipitation is 30%.
A slight chance of rain showers after noon. Mostly sunny, with a high near 76. Northeast wind 7 to 12 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Partly Sunny then Showers And Thunderstorms
|
84°F |
20 mph
SE
|
|
Saturday Night
May 30
|
Showers And Thunderstorms Likely
|
55°F |
12 to 20 mph
SE
|
|
Sunday
May 31
|
Showers And Thunderstorms Likely
|
77°F |
10 to 16 mph
SSW
|
|
Sunday Night
May 31
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
49°F |
8 to 16 mph
W
|
|
Monday
Jun 1
|
Partly Sunny then Chance Rain Showers
|
72°F |
10 mph
WSW
|
|
Monday Night
Jun 1
|
Chance Showers And Thunderstorms
|
50°F |
6 to 12 mph
NNE
|
|
Tuesday
Jun 2
|
Mostly Sunny then Slight Chance Rain Showers
|
75°F |
7 to 10 mph
W
|
|
Tuesday Night
Jun 2
|
Chance Showers And Thunderstorms
|
50°F |
6 to 12 mph
E
|
|
Wednesday
Jun 3
|
Mostly Sunny then Slight Chance Rain Showers
|
76°F |
7 to 12 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fallon County.
Nearby forecast pages are not available for this location yet.
Coverage
Forecast coverage currently spans 0 of 0 mapped cities in Fallon County.
