Lake County, MT Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Lake County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 68. South southwest wind 8 to 18 mph, with gusts as high as 29 mph.
County Weather Overview
This county weather page brings together forecast coverage for Lake 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 Lake County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 17 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 4:55 PM MDT
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake County
Saturday looks like the warmest upcoming period in Lake County at 68 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Saturday at about 8 to 18 mph SSW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 4:55 PM MDT
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- MSO
- Radar station
- KMSX
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 34.
Sunny, with a high near 59.
Partly cloudy, with a low around 35.
Mostly sunny, with a high near 61.
Mostly cloudy, with a low around 37.
Partly sunny, with a high near 57.
A slight chance of rain before midnight. Mostly cloudy, with a low around 37.
Mostly sunny, with a high near 57.
A slight chance of rain after midnight. Partly cloudy, with a low around 36.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Oct 17
|
Mostly Sunny
|
68°F |
8 to 18 mph
SSW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
34°F |
2 to 16 mph
SSW
|
|
Sunday
Oct 18
|
Sunny
|
59°F |
2 mph
SSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
35°F |
2 mph
ENE
|
|
Monday
Oct 19
|
Mostly Sunny
|
61°F |
2 mph
NNE
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
37°F |
2 mph
NE
|
|
Tuesday
Oct 20
|
Partly Sunny
|
57°F |
2 mph
W
|
|
Tuesday Night
Oct 20
|
Slight Chance Light Rain then Mostly Cloudy
|
37°F |
1 mph
E
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
57°F |
2 mph
SW
|
|
Wednesday Night
Oct 21
|
Partly Cloudy then Slight Chance Light Rain
|
36°F |
1 mph
SSE
|
Major City Forecasts
Live forecast snapshots for major cities across Lake County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Lake County.
Largest mapped city population in this region: 5,181.
