Gallatin County, MT Weather Forecast
County weather hub
Partly Sunny
Compare major city weather across Gallatin County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly sunny, with a high near 46. West northwest wind around 2 mph.
County Weather Overview
This county weather page brings together forecast coverage for Gallatin County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Gallatin County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 13 to Oct 16, 2026
- Latest sync
- Oct 10, 2026 11:04 AM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Gallatin County
Friday looks like the warmest upcoming period in Gallatin County at 58 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Friday Night at about 1 to 14 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 10, 2026 11:04 AM MDT
- Coverage
- 5 days
- Time zone
- America/Denver
- Forecast office
- TFX
- Radar station
- KBLX
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 31. South southwest wind around 2 mph.
Mostly sunny, with a high near 49.
A slight chance of rain before 9pm, then a slight chance of rain and snow. Partly cloudy, with a low around 33.
A slight chance of snow before 3pm, then a slight chance of rain. Mostly sunny, with a high near 51.
Partly cloudy, with a low around 32.
Sunny, with a high near 58.
Mostly clear, with a low around 37.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Partly Sunny
|
46°F |
2 mph
WNW
|
|
Tuesday Night
Oct 13
|
Partly Cloudy
|
31°F |
2 mph
SSW
|
|
Wednesday
Oct 14
|
Mostly Sunny
|
49°F |
3 mph
SSW
|
|
Wednesday Night
Oct 14
|
Slight Chance Rain And Snow
|
33°F |
2 to 6 mph
SW
|
|
Thursday
Oct 15
|
Slight Chance Light Snow
|
51°F |
3 mph
WSW
|
|
Thursday Night
Oct 15
|
Partly Cloudy
|
32°F |
0 to 5 mph
SW
|
|
Friday
Oct 16
|
Sunny
|
58°F |
5 mph
W
|
|
Friday Night
Oct 16
|
Mostly Clear
|
37°F |
1 to 14 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Gallatin County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Gallatin County.
Largest mapped city population in this region: 10,390.
