Gallatin County, MT Weather Forecast
County weather hub
Mostly Sunny then Chance 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.
A chance of showers and thunderstorms between noon and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. North northeast wind 1 to 6 mph. Chance of precipitation is 30%.
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
- Jul 14 to Jul 19, 2026
- Latest sync
- Jul 13, 2026 12:38 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Gallatin County
Tuesday looks like the warmest upcoming period in Gallatin County at 88 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Thursday Night at about 7 mph SE.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 13, 2026 12:38 PM MDT
- Coverage
- 7 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
A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. Mostly cloudy, with a low around 61. Northwest wind 1 to 5 mph. Chance of precipitation is 50%.
A slight chance of rain showers before noon, then showers and thunderstorms. Mostly cloudy, with a high near 83. Northwest wind 1 to 5 mph. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 58. Southeast wind around 5 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. North northeast wind 1 to 6 mph.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 59. Southeast wind around 7 mph.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 59.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85.
A chance of rain showers before midnight. Partly cloudy, with a low around 60.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 59.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Mostly Sunny then Chance Showers And Thunderstorms
|
88°F |
1 to 6 mph
NNE
|
|
Tuesday Night
Jul 14
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
61°F |
1 to 5 mph
NW
|
|
Wednesday
Jul 15
|
Showers And Thunderstorms
|
83°F |
1 to 5 mph
NW
|
|
Wednesday Night
Jul 15
|
Showers And Thunderstorms Likely
|
58°F |
5 mph
SE
|
|
Thursday
Jul 16
|
Mostly Sunny then Chance Showers And Thunderstorms
|
85°F |
1 to 6 mph
NNE
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms then Partly Cloudy
|
59°F |
7 mph
SE
|
|
Friday
Jul 17
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
88°F |
3 to 7 mph
WNW
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms then Partly Cloudy
|
59°F |
7 mph
SW
|
|
Saturday
Jul 18
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
85°F |
2 to 6 mph
NW
|
|
Saturday Night
Jul 18
|
Chance Rain Showers then Partly Cloudy
|
60°F |
6 mph
S
|
|
Sunday
Jul 19
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
84°F |
2 to 7 mph
NNW
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms then Partly Cloudy
|
59°F |
3 to 7 mph
ENE
|
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.