Gallatin County, MT Weather Forecast
County weather hub
Showers And Thunderstorms
Compare major city weather across Gallatin County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Showers and thunderstorms. Cloudy. High near 75, with temperatures falling to around 68 in the afternoon. East southeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
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
- May 26 to Jun 1, 2026
- Latest sync
- May 26, 2026 3:49 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Gallatin County
Thursday looks like the warmest upcoming period in Gallatin County at 85 degrees F.
Sunday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Monday at about 3 to 8 mph W.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- May 26, 2026 3:49 PM MDT
- Coverage
- 8 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
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm. Mostly cloudy. Low around 49, with temperatures rising to around 52 overnight. South southeast wind around 5 mph. Chance of precipitation is 60%.
A chance of rain showers between 11am and noon, then showers and thunderstorms likely between noon and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 78, with temperatures falling to around 75 in the afternoon. North wind 1 to 5 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 52. South southeast wind around 6 mph. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. East southeast wind 2 to 6 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 53. South southeast wind 3 to 7 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. South wind 2 to 7 mph.
A chance of showers and thunderstorms before midnight, then a chance of rain. Mostly cloudy, with a low around 50. South wind 3 to 7 mph.
Rain likely before noon, then showers and thunderstorms. Mostly cloudy, with a high near 64.
Showers and thunderstorms before midnight, then rain likely. Mostly cloudy, with a low around 45.
Rain likely before noon, then showers and thunderstorms likely. Mostly cloudy, with a high near 62.
A chance of showers and thunderstorms before midnight, then a slight chance of rain. Mostly cloudy, with a low around 42.
A chance of rain before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 66.
A slight chance of rain before midnight. Partly cloudy, with a low around 43.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
May 26
|
Showers And Thunderstorms
|
75°F |
7 mph
ESE
|
|
Tonight
May 26
|
Showers And Thunderstorms Likely then Mostly Cloudy
|
49°F |
5 mph
SSE
|
|
Wednesday
May 27
|
Showers And Thunderstorms Likely
|
78°F |
1 to 5 mph
N
|
|
Wednesday Night
May 27
|
Chance Showers And Thunderstorms then Partly Cloudy
|
52°F |
6 mph
SSE
|
|
Thursday
May 28
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
85°F |
2 to 6 mph
ESE
|
|
Thursday Night
May 28
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
53°F |
3 to 7 mph
SSE
|
|
Friday
May 29
|
Mostly Sunny then Chance Showers And Thunderstorms
|
81°F |
2 to 7 mph
S
|
|
Friday Night
May 29
|
Chance Showers And Thunderstorms then Chance Light Rain
|
50°F |
3 to 7 mph
S
|
|
Saturday
May 30
|
Light Rain Likely then Showers And Thunderstorms
|
64°F |
3 to 7 mph
WSW
|
|
Saturday Night
May 30
|
Showers And Thunderstorms then Light Rain Likely
|
45°F |
3 to 7 mph
SW
|
|
Sunday
May 31
|
Light Rain Likely then Showers And Thunderstorms Likely
|
62°F |
7 mph
WSW
|
|
Sunday Night
May 31
|
Chance Showers And Thunderstorms then Slight Chance Light Rain
|
42°F |
3 to 7 mph
SW
|
|
Monday
Jun 1
|
Chance Light Rain then Chance Showers And Thunderstorms
|
66°F |
3 to 8 mph
W
|
|
Monday Night
Jun 1
|
Slight Chance Light Rain then Partly Cloudy
|
43°F |
3 to 7 mph
SE
|
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.
