Jefferson County, MT Weather Forecast
County weather hub
Partly Sunny then Chance Showers And Thunderstorms
Compare major city weather across Jefferson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 89.
County Weather Overview
This county weather page brings together forecast coverage for Jefferson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Jefferson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14, 2026
- Latest sync
- Jul 8, 2026 7:44 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Jefferson County
Tuesday looks like the warmest upcoming period in Jefferson County at 89 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Tuesday Night at about 6 mph NNW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 8, 2026 7:44 PM MDT
- Coverage
- 2 days
- Time zone
- America/Denver
- Forecast office
- TFX
- Radar station
- KTFX
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 midnight. Partly cloudy, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Partly Sunny then Chance Showers And Thunderstorms
|
89°F |
5 mph
ENE
|
|
Tuesday Night
Jul 14
|
Chance Showers And Thunderstorms then Partly Cloudy
|
63°F |
6 mph
NNW
|
Major City Forecasts
Live forecast snapshots for major cities across Jefferson County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Jefferson County.
Largest mapped city population in this region: 1,661.
