Lewistown, MT Weather Forecast
Local 7-day forecast
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Lewistown, MT in one place.
A slight chance of showers and thunderstorms between noon and 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 68. West wind 6 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Lewistown, 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: Jun 8, 2026 12:40 AM MDT.
The active forecast window currently covers Jun 9 to Jun 14, 2026 for Lewistown, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 12:40 AM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lewistown
Tuesday looks like the warmest upcoming period in Lewistown at 68 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Wednesday at about 18 to 28 mph W.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 12:40 AM MDT
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- TFX
- Radar station
- KBLX
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 before 9pm, then a chance of rain between 9pm and midnight. Mostly cloudy, with a low around 41. West wind 12 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 58. West wind 18 to 28 mph, with gusts as high as 37 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before midnight, then a chance of rain. Mostly cloudy, with a low around 38. West wind 17 to 26 mph, with gusts as high as 38 mph.
A chance of rain before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 62. West northwest wind 16 to 21 mph, with gusts as high as 29 mph.
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 40.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 62.
A slight chance of showers and thunderstorms before midnight, then a slight chance of rain. Partly cloudy, with a low around 40.
A chance of rain before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 60.
A chance of showers and thunderstorms before midnight, then a slight chance of rain. Mostly cloudy, with a low around 40.
A chance of rain. Partly sunny, with a high near 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
68°F |
6 to 12 mph
W
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
41°F |
12 to 15 mph
W
|
|
Wednesday
Jun 10
|
Partly Sunny then Chance Showers And Thunderstorms
|
58°F |
18 to 28 mph
W
|
|
Wednesday Night
Jun 10
|
Chance Showers And Thunderstorms then Chance Light Rain
|
38°F |
17 to 26 mph
W
|
|
Thursday
Jun 11
|
Chance Light Rain then Chance Showers And Thunderstorms
|
62°F |
16 to 21 mph
WNW
|
|
Thursday Night
Jun 11
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
40°F |
6 to 16 mph
W
|
|
Friday
Jun 12
|
Mostly Sunny then Chance Showers And Thunderstorms
|
62°F |
6 to 12 mph
WNW
|
|
Friday Night
Jun 12
|
Slight Chance Showers And Thunderstorms then Slight Chance Light Rain
|
40°F |
5 to 13 mph
WNW
|
|
Saturday
Jun 13
|
Chance Light Rain then Chance Showers And Thunderstorms
|
60°F |
7 to 13 mph
NW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms then Slight Chance Light Rain
|
40°F |
5 to 14 mph
WNW
|
|
Sunday
Jun 14
|
Chance Light Rain
|
64°F |
5 to 9 mph
WNW
|
Nearby Forecasts
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Nearby forecast pages are not available for this location yet.
