Sumatra, MT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sumatra, MT in one place.
Sunny. High near 62, with temperatures falling to around 56 in the afternoon. West southwest wind 5 to 8 mph.
Local Weather Overview
This forecast page for Sumatra, 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 9, 2026 6:58 AM MST.
The active forecast window currently covers Nov 11 to Nov 15, 2026 for Sumatra, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 11 to Nov 15, 2026
- Latest sync
- Nov 9, 2026 6:58 AM MST
- Forecast office
- BYZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Sumatra
Thursday looks like the warmest upcoming period in Sumatra at 65 degrees F.
Saturday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Friday at about 7 to 10 mph SW.
The forecast from Nov 11 through Nov 15 stays mostly dry.
Forecast Details
- Last updated
- Nov 9, 2026 6:58 AM MST
- Coverage
- 5 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
Mostly clear. Low around 40, with temperatures rising to around 42 overnight. West southwest wind around 7 mph.
Mostly sunny. High near 65, with temperatures falling to around 56 in the afternoon. South southwest wind 6 to 9 mph.
Partly cloudy. Low around 39, with temperatures rising to around 41 overnight. South southwest wind around 7 mph.
Mostly sunny. High near 64, with temperatures falling to around 54 in the afternoon. Southwest wind 7 to 10 mph.
Partly cloudy. Low around 41, with temperatures rising to around 43 overnight. Southwest wind around 8 mph.
Mostly sunny. High near 63, with temperatures falling to around 53 in the afternoon. Southwest wind 6 to 10 mph.
Partly cloudy. Low around 38, with temperatures rising to around 40 overnight. South wind around 6 mph.
Mostly sunny. High near 62, with temperatures falling to around 54 in the afternoon. South southwest wind 6 to 9 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Veterans Day
Nov 11
|
Sunny
|
62°F |
5 to 8 mph
WSW
|
|
Wednesday Night
Nov 11
|
Mostly Clear
|
40°F |
7 mph
WSW
|
|
Thursday
Nov 12
|
Mostly Sunny
|
65°F |
6 to 9 mph
SSW
|
|
Thursday Night
Nov 12
|
Partly Cloudy
|
39°F |
7 mph
SSW
|
|
Friday
Nov 13
|
Mostly Sunny
|
64°F |
7 to 10 mph
SW
|
|
Friday Night
Nov 13
|
Partly Cloudy
|
41°F |
8 mph
SW
|
|
Saturday
Nov 14
|
Mostly Sunny
|
63°F |
6 to 10 mph
SW
|
|
Saturday Night
Nov 14
|
Partly Cloudy
|
38°F |
6 mph
S
|
|
Sunday
Nov 15
|
Mostly Sunny
|
62°F |
6 to 9 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sumatra.