Castner Falls, MT Weather Forecast
Local 7-day forecast
Mostly Sunny then Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Castner Falls, MT in one place.
A chance of rain showers after noon. Mostly sunny, with a high near 56. West southwest wind 5 to 12 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Castner Falls, 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: Apr 26, 2026 3:42 PM MDT.
The active forecast window currently covers Apr 28 to May 2, 2026 for Castner Falls, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 28 to May 2, 2026
- Latest sync
- Apr 26, 2026 3:42 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Castner Falls
Friday looks like the warmest upcoming period in Castner Falls at 72 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 12 mph WSW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 26, 2026 3:42 PM MDT
- Coverage
- 6 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
A slight chance of rain showers before midnight. Mostly cloudy, with a low around 33. West wind 3 to 10 mph. Chance of precipitation is 20%.
A chance of rain showers. Partly sunny, with a high near 55. West wind 2 to 7 mph.
Partly cloudy, with a low around 34. South southwest wind 1 to 6 mph.
Sunny, with a high near 65.
Mostly clear, with a low around 38.
Mostly sunny, with a high near 72.
A slight chance of rain after midnight. Partly cloudy, with a low around 40.
A chance of rain. Partly sunny, with a high near 64.
A chance of rain. Mostly cloudy, with a low around 39.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Apr 28
|
Mostly Sunny then Chance Rain Showers
|
56°F |
5 to 12 mph
WSW
|
|
Tuesday Night
Apr 28
|
Slight Chance Rain Showers then Mostly Cloudy
|
33°F |
3 to 10 mph
W
|
|
Wednesday
Apr 29
|
Chance Rain Showers
|
55°F |
2 to 7 mph
W
|
|
Wednesday Night
Apr 29
|
Partly Cloudy
|
34°F |
1 to 6 mph
SSW
|
|
Thursday
Apr 30
|
Sunny
|
65°F |
5 mph
SSW
|
|
Thursday Night
Apr 30
|
Mostly Clear
|
38°F |
5 to 9 mph
SSW
|
|
Friday
May 1
|
Mostly Sunny
|
72°F |
7 to 12 mph
SW
|
|
Friday Night
May 1
|
Partly Cloudy then Slight Chance Light Rain
|
40°F |
3 to 9 mph
S
|
|
Saturday
May 2
|
Chance Light Rain
|
64°F |
3 to 8 mph
NNW
|
|
Saturday Night
May 2
|
Chance Light Rain
|
39°F |
2 to 12 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Castner Falls.