Westby, MT Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Westby, MT in one place.
A slight chance of rain showers before 8am. Mostly cloudy, with a high near 83. East northeast wind around 26 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Westby, 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: Jul 14, 2026 5:45 AM MDT.
The active forecast window currently covers Jul 15 to Jul 20, 2026 for Westby, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 5:45 AM MDT
- Forecast office
- GGW
- Source
- NOAA / NWS
Daily Outlook
This Week in Westby
Saturday looks like the warmest upcoming period in Westby at 86 degrees F.
Thursday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Wednesday at about 26 mph ENE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 5:45 AM MDT
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- GGW
- Radar station
- KGGW
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. East northeast wind 15 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Partly sunny, with a high near 82. Northeast wind around 14 mph, with gusts as high as 21 mph.
Partly cloudy, with a low around 59. North northeast wind 7 to 13 mph, with gusts as high as 18 mph.
Mostly sunny, with a high near 84. North northeast wind 6 to 10 mph.
Partly cloudy, with a low around 61. East northeast wind 7 to 13 mph.
Mostly sunny, with a high near 86. East southeast wind 7 to 14 mph, with gusts as high as 21 mph.
A slight chance of rain showers after midnight. Partly cloudy, with a low around 61. Southeast wind 12 to 15 mph, with gusts as high as 22 mph.
Mostly sunny, with a high near 84.
Partly cloudy, with a low around 60.
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Slight Chance Rain Showers then Mostly Cloudy
|
83°F |
26 mph
ENE
|
|
Wednesday Night
Jul 15
|
Chance Showers And Thunderstorms
|
61°F |
15 to 25 mph
ENE
|
|
Thursday
Jul 16
|
Partly Sunny
|
82°F |
14 mph
NE
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
59°F |
7 to 13 mph
NNE
|
|
Friday
Jul 17
|
Mostly Sunny
|
84°F |
6 to 10 mph
NNE
|
|
Friday Night
Jul 17
|
Partly Cloudy
|
61°F |
7 to 13 mph
ENE
|
|
Saturday
Jul 18
|
Mostly Sunny
|
86°F |
7 to 14 mph
ESE
|
|
Saturday Night
Jul 18
|
Partly Cloudy then Slight Chance Rain Showers
|
61°F |
12 to 15 mph
SE
|
|
Sunday
Jul 19
|
Mostly Sunny
|
84°F |
12 to 18 mph
WSW
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
60°F |
13 to 16 mph
NW
|
|
Monday
Jul 20
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
82°F |
13 to 17 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Westby.