Yellowstone County, MT Weather Forecast
County weather hub
Sunny
Compare major city weather across Yellowstone County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny. High near 98, with temperatures falling to around 95 in the afternoon. East northeast wind 10 to 14 mph.
County Weather Overview
This county weather page brings together forecast coverage for Yellowstone County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Yellowstone County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14 to Jul 16, 2026
- Latest sync
- Jul 10, 2026 11:53 AM MDT
- Forecast office
- BYZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Yellowstone County
Tuesday looks like the warmest upcoming period in Yellowstone County at 98 degrees F.
Thursday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 14 mph ENE.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 10, 2026 11:53 AM MDT
- Coverage
- 4 days
- Time zone
- America/Denver
- Forecast office
- BYZ
- 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. Mostly cloudy, with a low around 68. North northeast wind 7 to 14 mph. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 93. North wind 5 to 9 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 67. North wind 5 to 9 mph. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after noon. Mostly sunny. High near 94, with temperatures falling to around 92 in the afternoon. North northwest wind 3 to 9 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms before midnight. Partly cloudy. Low around 65, with temperatures rising to around 67 overnight. Northeast wind 6 to 10 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
98°F |
10 to 14 mph
ENE
|
|
Tuesday Night
Jul 14
|
Chance Showers And Thunderstorms
|
68°F |
7 to 14 mph
NNE
|
|
Wednesday
Jul 15
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
5 to 9 mph
N
|
|
Wednesday Night
Jul 15
|
Chance Showers And Thunderstorms then Partly Cloudy
|
67°F |
5 to 9 mph
N
|
|
Thursday
Jul 16
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
94°F |
3 to 9 mph
NNW
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms then Partly Cloudy
|
65°F |
6 to 10 mph
NE
|
Major City Forecasts
Live forecast snapshots for major cities across Yellowstone County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Yellowstone County.
Largest mapped city population in this region: 117,445.
