Boulder, MT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Boulder, MT in one place.
Sunny, with a high near 42. East northeast wind around 3 mph.
Local Weather Overview
This forecast page for Boulder, 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 12:05 PM MDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Boulder, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 12:05 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Boulder
Saturday looks like the warmest upcoming period in Boulder at 61 degrees F.
Tonight is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Friday Night at about 7 to 12 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 12:05 PM MDT
- Coverage
- 8 days
- Time zone
- America/Denver
- Forecast office
- TFX
- Radar station
- KTFX
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 30. West southwest wind around 5 mph.
Mostly sunny. High near 57, with temperatures falling to around 54 in the afternoon. South southwest wind around 7 mph.
Partly cloudy, with a low around 36. Southwest wind 7 to 12 mph, with gusts as high as 20 mph.
Mostly sunny, with a high near 61. South southwest wind 8 to 12 mph, with gusts as high as 22 mph.
Partly cloudy, with a low around 34. West wind 3 to 10 mph, with gusts as high as 18 mph.
Sunny, with a high near 56. Southwest wind 1 to 5 mph.
Mostly clear, with a low around 36. South southwest wind around 3 mph.
Mostly sunny, with a high near 59.
Partly cloudy, with a low around 39.
A slight chance of rain. Partly sunny, with a high near 52.
A slight chance of rain before 3am, then a slight chance of rain and snow. Mostly cloudy, with a low around 35.
Mostly sunny, with a high near 50.
Partly cloudy, with a low around 36.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Oct 15
|
Sunny
|
42°F |
3 mph
ENE
|
|
Tonight
Oct 15
|
Partly Cloudy
|
30°F |
5 mph
WSW
|
|
Friday
Oct 16
|
Mostly Sunny
|
57°F |
7 mph
SSW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
36°F |
7 to 12 mph
SW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
61°F |
8 to 12 mph
SSW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
34°F |
3 to 10 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
56°F |
1 to 5 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
36°F |
3 mph
SSW
|
|
Monday
Oct 19
|
Mostly Sunny
|
59°F |
3 to 7 mph
SSW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
39°F |
6 mph
SW
|
|
Tuesday
Oct 20
|
Slight Chance Light Rain
|
52°F |
5 mph
NW
|
|
Tuesday Night
Oct 20
|
Slight Chance Light Rain then Slight Chance Rain And Snow
|
35°F |
3 mph
NW
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
50°F |
1 to 5 mph
SW
|
|
Wednesday Night
Oct 21
|
Partly Cloudy
|
36°F |
5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Boulder.