Fallon County, MT Weather Forecast
County weather hub
Sunny
Compare major city weather across Fallon County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny. High near 56, with temperatures falling to around 52 in the afternoon. Northwest wind 13 to 23 mph.
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
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 11:26 PM 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 75 degrees F.
Thursday Night is the coolest period ahead with temperatures near 28 degrees F.
The strongest winds are forecast for Thursday at about 13 to 23 mph NW.
The forecast from Oct 15 through Oct 20 stays mostly dry.
Forecast Details
- Last updated
- Oct 13, 2026 11:26 PM MDT
- Coverage
- 6 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
Mostly clear, with a low around 28. West northwest wind 2 to 17 mph.
Sunny. High near 68, with temperatures falling to around 64 in the afternoon. South wind 6 to 17 mph.
Clear, with a low around 42. South wind 9 to 14 mph.
Sunny. High near 75, with temperatures falling to around 67 in the afternoon. West southwest wind 9 to 13 mph.
Mostly clear, with a low around 43. West southwest wind around 7 mph.
Sunny. High near 66, with temperatures falling to around 62 in the afternoon. Northwest wind 5 to 8 mph.
Mostly clear, with a low around 42. East southeast wind 5 to 9 mph.
Sunny. High near 72, with temperatures falling to around 69 in the afternoon. South southeast wind 9 to 15 mph.
Partly cloudy, with a low around 47. Southeast wind around 13 mph.
Mostly sunny. High near 71, with temperatures falling to around 66 in the afternoon. South southwest wind 9 to 14 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Sunny
|
56°F |
13 to 23 mph
NW
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
28°F |
2 to 17 mph
WNW
|
|
Friday
Oct 16
|
Sunny
|
68°F |
6 to 17 mph
S
|
|
Friday Night
Oct 16
|
Clear
|
42°F |
9 to 14 mph
S
|
|
Saturday
Oct 17
|
Sunny
|
75°F |
9 to 13 mph
WSW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
43°F |
7 mph
WSW
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
5 to 8 mph
NW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
42°F |
5 to 9 mph
ESE
|
|
Monday
Oct 19
|
Sunny
|
72°F |
9 to 15 mph
SSE
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
47°F |
13 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
71°F |
9 to 14 mph
SSW
|
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.
