Greycliff, MT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Greycliff, MT in one place.
Sunny, with a high near 68. North northwest wind 3 to 10 mph.
Local Weather Overview
This forecast page for Greycliff, 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: Sep 14, 2026 9:22 PM MDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Greycliff, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 9:22 PM MDT
- Forecast office
- BYZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Greycliff
Monday looks like the warmest upcoming period in Greycliff at 77 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Wednesday Night at about 1 to 15 mph ENE.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 9:22 PM MDT
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- BYZ
- Radar station
- KBLX
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 45. East northeast wind 1 to 15 mph.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. East northeast wind 0 to 7 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly cloudy. Low around 51, with temperatures rising to around 54 overnight. South wind 2 to 7 mph. Chance of precipitation is 40%.
A slight chance of rain showers before noon, then showers and thunderstorms likely. Partly sunny. High near 73, with temperatures falling to around 70 in the afternoon. Northwest wind 5 to 8 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 49. West wind 3 to 9 mph. Chance of precipitation is 60%.
A chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 71. West wind 5 to 10 mph. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms before midnight. Partly cloudy. Low around 48, with temperatures rising to around 50 overnight. West southwest wind 6 to 10 mph. Chance of precipitation is 20%.
Sunny, with a high near 73. West northwest wind 5 to 9 mph.
Mostly clear, with a low around 47. South wind 2 to 9 mph.
Sunny. High near 77, with temperatures falling to around 75 in the afternoon. West wind 2 to 7 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Sunny
|
68°F |
3 to 10 mph
NNW
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
45°F |
1 to 15 mph
ENE
|
|
Thursday
Sep 17
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
75°F |
0 to 7 mph
ENE
|
|
Thursday Night
Sep 17
|
Chance Showers And Thunderstorms
|
51°F |
2 to 7 mph
S
|
|
Friday
Sep 18
|
Showers And Thunderstorms Likely
|
73°F |
5 to 8 mph
NW
|
|
Friday Night
Sep 18
|
Showers And Thunderstorms Likely
|
49°F |
3 to 9 mph
W
|
|
Saturday
Sep 19
|
Chance Rain Showers
|
71°F |
5 to 10 mph
W
|
|
Saturday Night
Sep 19
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
48°F |
6 to 10 mph
WSW
|
|
Sunday
Sep 20
|
Sunny
|
73°F |
5 to 9 mph
WNW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
47°F |
2 to 9 mph
S
|
|
Monday
Sep 21
|
Sunny
|
77°F |
2 to 7 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Greycliff.