LEWISTOWN, MT 59457 Weather Forecast & Current Conditions

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LEWISTOWN, MT
Current Weather

1:54 AM MDT APR 5, 2026
Clear
32°F
Feels Like: 29°F
Dewpoint: 27°F
Rel. Hum.: 81%
Visibility: 10 miles
Wind: SE at 3 mph
Pressure: 30.32 inches
Last 72 hours

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LEWISTOWN, MT 59457
Weather Forecast

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REST OF TODAY
Partly cloudy. Haze. Highs 75 to 85. Southeast winds 5 to 15 mph.
TONIGHT
Cloudy with a 20 percent chance of rain showers. Haze through the night. Lows 50 to 60. North winds 5 to 15 mph.
WEDNESDAY
Mostly cloudy with a 20 percent chance of rain showers. Haze. Highs 65 to 75. Northwest winds 5 to 15 mph.
WEDNESDAY NIGHT
Cooler. Partly cloudy. Lows 45 to 50. North winds 5 to 10 mph shifting to the south after midnight.
THURSDAY
Partly cloudy. A 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. Southeast winds up to 10 mph.
THURSDAY NIGHT AND FRIDAY
Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 50 to 55. Highs 65 to 75. Chance of precipitation 50 percent.
FRIDAY NIGHT
Partly cloudy. Lows 45 to 50.
SATURDAY
Partly cloudy with a 20 percent chance of rain showers. Highs 65 to 75.
SATURDAY NIGHT
Mostly cloudy with a 40 percent chance of rain showers. Lows 45 to 50.
SUNDAY
Partly cloudy with a 20 percent chance of rain showers. Highs 65 to 75.
SUNDAY NIGHT
Mostly cloudy with a 20 percent chance of rain showers. Lows 45 to 50.
MONDAY
Mostly cloudy with a 40 percent chance of rain showers. Highs 65 to 75.

Visible Weather Satellite
LEWISTOWN, MT 59457
Infrared Weather Satellite
LEWISTOWN, MT 59457
NEXRAD Weather Radar
LEWISTOWN, MT 59457

LEWISTOWN, MT 3 hourly weather forecast

weather forecast created  5:00 PM PDT  4/ 4/2026
Sunday
5 APR 2026
LEWISTOWN, MT 59457 weather forecast Day 1, 0 hours 12 AM 37° 33° Partly Cloudy 1%

0% Thunder
( 0% severe)
WSW   5 66% 27°
Low 30° LEWISTOWN, MT 59457 weather forecast Day 1, 3 hours 3 AM 33° 30° Clear SW   3 74% 26°
High 52° LEWISTOWN, MT 59457 weather forecast Day 1, 6 hours 6 AM 31° 28° Partly Cloudy 2%

0% Thunder
( 0% severe)
SSW   3 77% 25°

Partly Cloudy



LEWISTOWN, MT 59457 weather forecast Day 1, 9 hours 9 AM 37° 33° Partly Cloudy E   5 69% 28°
LEWISTOWN, MT 59457 weather forecast Day 1, 12 hours 12 PM 47° 44° Mostly Cloudy 8%

0% Thunder
( 1% severe)
E   7 49% 29°
LEWISTOWN, MT 59457 weather forecast Day 1, 15 hours 3 PM 49° 45° Partly Cloudy ENE   10 44% 28°
LEWISTOWN, MT 59457 weather forecast Day 1, 18 hours 6 PM 48° 43° Mostly Cloudy 4%

0% Thunder
( 1% severe)
E   12 45% 28°
LEWISTOWN, MT 59457 weather forecast Day 1, 21 hours 9 PM 39° 32° Mostly Cloudy E   12 64% 28°
Monday
6 APR 2026
LEWISTOWN, MT 59457 weather forecast Day 2, 0 hours 12 AM 35° 27° Mostly Cloudy 4%

0% Thunder
( 0% severe)
ESE   12 66% 25°
Low 28° LEWISTOWN, MT 59457 weather forecast Day 2, 3 hours 3 AM 32° 24° Mostly Cloudy E   10 71% 24°
High 50° LEWISTOWN, MT 59457 weather forecast Day 2, 6 hours 6 AM 31° 23° Mostly Cloudy 6%

0% Thunder
( 0% severe)
ESE   9 74% 24°

Mostly Cloudy



LEWISTOWN, MT 59457 weather forecast Day 2, 9 hours 9 AM 34° 25° Mostly Cloudy ESE   12 68% 25°
LEWISTOWN, MT 59457 weather forecast Day 2, 12 hours 12 PM 43° 36° Mostly Cloudy 6%

0% Thunder
( 0% severe)
ESE   14 50% 26°
LEWISTOWN, MT 59457 weather forecast Day 2, 15 hours 3 PM 47° 41° Mostly Cloudy ESE   14 47% 28°
LEWISTOWN, MT 59457 weather forecast Day 2, 18 hours 6 PM 47° 41° Mostly Cloudy 2%

0% Thunder
( 0% severe)
SE   13 47% 28°
LEWISTOWN, MT 59457 weather forecast Day 2, 21 hours 9 PM 40° 33° Mostly Cloudy SE   10 64% 29°

LEWISTOWN, MT extended weather forecast

Tuesday
7 APR 2026
Wednesday
8 APR 2026
Thursday
9 APR 2026
Friday
10 APR 2026
Saturday
11 APR 2026
Low 36° Low 29° Low 22° Low 31° Low 35°
High 72° High 41° High 52° High 62° High 59°
LEWISTOWN, MT 59457 weather forecast Day 3 LEWISTOWN, MT 59457 weather forecast Day 4 LEWISTOWN, MT 59457 weather forecast Day 5 LEWISTOWN, MT 59457 weather forecast Day 6 LEWISTOWN, MT 59457 weather forecast Day 7
Mostly Cloudy
12% Rain
Overcast
33% Snow
Clear
9% Rain/Snow
Partly Cloudy
9% Rain/Snow
Overcast
34% Rain/Snow
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