Halfmoon, MT Weather Forecast
Local 7-day forecast
Patchy Fog then Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Halfmoon, MT in one place.
Patchy fog between 8am and 10am. Partly sunny, with a high near 45. Southwest wind 1 to 6 mph.
Local Weather Overview
This forecast page for Halfmoon, MT is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Nov 5, 2026 4:47 PM MST.
The active forecast window currently covers Nov 6 to Nov 11, 2026 for Halfmoon, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 6 to Nov 11, 2026
- Latest sync
- Nov 5, 2026 4:47 PM MST
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Halfmoon
Veterans Day looks like the warmest upcoming period in Halfmoon at 54 degrees F.
Sunday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Sunday at about 6 to 20 mph SSW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 5, 2026 4:47 PM MST
- Coverage
- 7 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 32. South wind around 3 mph.
Mostly sunny, with a high near 52. South southeast wind around 2 mph.
A slight chance of rain after 5am. Partly cloudy, with a low around 34. Chance of precipitation is 20%.
A chance of rain before 5pm. Mostly cloudy, with a high near 49.
Patchy fog after 5am. Mostly cloudy, with a low around 29.
Areas of fog before 9am. Partly sunny, with a high near 46.
Areas of fog between 10pm and 5am, then patchy fog and a slight chance of rain. Mostly cloudy, with a low around 31.
A chance of rain and patchy fog. Partly sunny, with a high near 50.
A chance of rain before midnight, then patchy fog and a slight chance of rain. Mostly cloudy, with a low around 35.
Patchy fog and a slight chance of rain before 11am. Partly sunny, with a high near 54.
Mostly cloudy, with a low around 35.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Nov 6
|
Patchy Fog then Partly Sunny
|
45°F |
1 to 6 mph
SW
|
|
Friday Night
Nov 6
|
Partly Cloudy
|
32°F |
3 mph
S
|
|
Saturday
Nov 7
|
Mostly Sunny
|
52°F |
2 mph
SSE
|
|
Saturday Night
Nov 7
|
Partly Cloudy then Slight Chance Light Rain
|
34°F |
1 to 6 mph
E
|
|
Sunday
Nov 8
|
Chance Light Rain
|
49°F |
6 to 20 mph
SSW
|
|
Sunday Night
Nov 8
|
Mostly Cloudy then Patchy Fog
|
29°F |
0 to 9 mph
SSW
|
|
Monday
Nov 9
|
Areas Of Fog then Partly Sunny
|
46°F |
0 mph
|
|
Monday Night
Nov 9
|
Areas Of Fog
|
31°F |
1 mph
SSW
|
|
Tuesday
Nov 10
|
Chance Light Rain
|
50°F |
3 mph
S
|
|
Tuesday Night
Nov 10
|
Chance Light Rain then Patchy Fog
|
35°F |
3 mph
SSE
|
|
Veterans Day
Nov 11
|
Patchy Fog then Partly Sunny
|
54°F |
2 mph
SSE
|
|
Wednesday Night
Nov 11
|
Mostly Cloudy
|
35°F |
1 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Halfmoon.