Hamilton, MT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Hamilton, MT in one place.
Sunny, with a high near 57. Northeast wind around 2 mph.
Local Weather Overview
This forecast page for Hamilton, 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: Oct 15, 2026 4:40 PM MDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Hamilton, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 4:40 PM MDT
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Hamilton
Saturday looks like the warmest upcoming period in Hamilton at 69 degrees F.
Tonight is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Friday Night at about 3 to 12 mph S.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 4:40 PM 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
Patchy freezing fog between 9pm and 10pm, then areas of frost. Mostly clear. Low around 31, with temperatures rising to around 36 overnight. South wind 1 to 8 mph.
Widespread frost before 10am. Mostly sunny, with a high near 68. South wind 3 to 9 mph.
Partly cloudy, with a low around 38. South wind 3 to 12 mph, with gusts as high as 23 mph.
Mostly sunny, with a high near 69. South southwest wind around 12 mph, with gusts as high as 22 mph.
Partly cloudy, with a low around 37.
Sunny, with a high near 63.
Mostly clear, with a low around 38.
Mostly sunny, with a high near 67.
Mostly cloudy, with a low around 38.
A slight chance of rain after noon. Partly sunny, with a high near 58.
A slight chance of rain. Mostly cloudy, with a low around 38.
A slight chance of rain. Partly sunny, with a high near 57.
A slight chance of rain after midnight. Mostly cloudy, with a low around 39.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Sunny
|
57°F |
2 mph
NE
|
|
Tonight
Oct 15
|
Patchy Freezing Fog then Areas Of Frost
|
31°F |
1 to 8 mph
S
|
|
Friday
Oct 16
|
Widespread Frost then Mostly Sunny
|
68°F |
3 to 9 mph
S
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
38°F |
3 to 12 mph
S
|
|
Saturday
Oct 17
|
Mostly Sunny
|
69°F |
12 mph
SSW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
37°F |
3 to 7 mph
WSW
|
|
Sunday
Oct 18
|
Sunny
|
63°F |
3 mph
SSE
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
2 to 6 mph
SE
|
|
Monday
Oct 19
|
Mostly Sunny
|
67°F |
7 mph
S
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
38°F |
5 mph
S
|
|
Tuesday
Oct 20
|
Partly Sunny then Slight Chance Light Rain
|
58°F |
5 mph
SE
|
|
Tuesday Night
Oct 20
|
Slight Chance Light Rain
|
38°F |
3 mph
WNW
|
|
Wednesday
Oct 21
|
Slight Chance Light Rain
|
57°F |
2 mph
SSW
|
|
Wednesday Night
Oct 21
|
Mostly Cloudy then Slight Chance Light Rain
|
39°F |
1 to 5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Hamilton.
