Lake County, MT Weather Forecast
County weather hub
Sunny
Compare major city weather across Lake County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 57. South wind around 5 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
- Apr 18 to Apr 24, 2026
- Latest sync
- Apr 18, 2026 9:29 AM MDT
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake County
Tuesday looks like the warmest upcoming period in Lake County at 75 degrees F.
Thursday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Wednesday at about 3 to 9 mph SSW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 18, 2026 9:29 AM MDT
- Coverage
- 8 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
Mostly clear, with a low around 32. Southeast wind around 3 mph.
Sunny, with a high near 65. Southwest wind around 3 mph.
Partly cloudy, with a low around 41. Southeast wind around 3 mph.
Sunny, with a high near 73. South southwest wind around 3 mph.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 75.
A slight chance of rain after midnight. Mostly cloudy, with a low around 45.
A chance of rain before noon, then showers and thunderstorms likely. Mostly cloudy, with a high near 60.
Rain likely. Mostly cloudy, with a low around 38.
A chance of rain. Mostly cloudy, with a high near 52.
A slight chance of rain before 9pm, then a slight chance of rain and snow between 9pm and midnight. Mostly cloudy, with a low around 31.
A slight chance of rain after noon. Mostly sunny, with a high near 52.
Partly cloudy, with a low around 31.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Apr 18
|
Sunny
|
57°F |
5 mph
S
|
|
Tonight
Apr 18
|
Mostly Clear
|
32°F |
3 mph
SE
|
|
Sunday
Apr 19
|
Sunny
|
65°F |
3 mph
SW
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
41°F |
3 mph
SE
|
|
Monday
Apr 20
|
Sunny
|
73°F |
3 mph
SSW
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
44°F |
3 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
75°F |
3 mph
NNE
|
|
Tuesday Night
Apr 21
|
Mostly Cloudy then Slight Chance Light Rain
|
45°F |
5 mph
ENE
|
|
Wednesday
Apr 22
|
Chance Light Rain then Showers And Thunderstorms Likely
|
60°F |
3 to 9 mph
SSW
|
|
Wednesday Night
Apr 22
|
Rain Likely
|
38°F |
8 mph
WSW
|
|
Thursday
Apr 23
|
Chance Light Rain
|
52°F |
8 mph
N
|
|
Thursday Night
Apr 23
|
Slight Chance Rain And Snow then Mostly Cloudy
|
31°F |
5 to 8 mph
NE
|
|
Friday
Apr 24
|
Mostly Sunny then Slight Chance Light Rain
|
52°F |
3 to 7 mph
NNE
|
|
Friday Night
Apr 24
|
Partly Cloudy
|
31°F |
6 mph
NE
|
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.
