LEWISTOWN, MT 59457 Weather Forecast & Current Conditions

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LEWISTOWN, MT
Current Weather

10:54 AM MDT JUL 24, 2026
Clear
86°F
Feels Like: 84°F
Dewpoint: 52°F
Rel. Hum.: 31%
Visibility: 10 miles
Wind: W at 12 mph
Pressure: 30.00 inches
Last 72 hours

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LEWISTOWN, MT 59457
Weather Forecast

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Snow Depth pages
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  7/25/2026
Sunday
26 JUL 2026
LEWISTOWN, MT 59457 weather forecast Day 1, 0 hours 12 AM 72° 72° Partly Cloudy 1%

0% Thunder
( 4% severe)
S   7 51% 53°
Low 61° LEWISTOWN, MT 59457 weather forecast Day 1, 3 hours 3 AM 66° 66° Partly Cloudy WSW   5 56% 50°
High 94° LEWISTOWN, MT 59457 weather forecast Day 1, 6 hours 6 AM 62° 63° Clear 0%

0% Thunder
( 0% severe)
SW   2 54% 45°

Partly Cloudy



LEWISTOWN, MT 59457 weather forecast Day 1, 9 hours 9 AM 74° 74° Partly Cloudy WNW   2 33% 43°
LEWISTOWN, MT 59457 weather forecast Day 1, 12 hours 12 PM 83° 81° Partly Cloudy 2%

0% Thunder
( 10% severe)
NNE   2 24% 43°
LEWISTOWN, MT 59457 weather forecast Day 1, 15 hours 3 PM 90° 86° Partly Cloudy E   3 20% 44°
LEWISTOWN, MT 59457 weather forecast Day 1, 18 hours 6 PM 91° 87° Partly Cloudy 7%

0% Thunder
( 13% severe)
E   6 21% 46°
LEWISTOWN, MT 59457 weather forecast Day 1, 21 hours 9 PM 78° 79° Partly Cloudy E   6 37% 50°
Monday
27 JUL 2026
LEWISTOWN, MT 59457 weather forecast Day 2, 0 hours 12 AM 70° 70° Clear 4%

0% Thunder
( 5% severe)
W   5 49% 50°
Low 58° LEWISTOWN, MT 59457 weather forecast Day 2, 3 hours 3 AM 65° 65° Partly Cloudy SW   3 56% 49°
High 92° LEWISTOWN, MT 59457 weather forecast Day 2, 6 hours 6 AM 61° 62° Partly Cloudy 0%

0% Thunder
( 1% severe)
WSW   3 58% 46°

Partly Cloudy



LEWISTOWN, MT 59457 weather forecast Day 2, 9 hours 9 AM 73° 73° Partly Cloudy WNW   2 34% 43°
LEWISTOWN, MT 59457 weather forecast Day 2, 12 hours 12 PM 82° 80° Clear 3%

0% Thunder
( 7% severe)
N   3 22% 39°
LEWISTOWN, MT 59457 weather forecast Day 2, 15 hours 3 PM 89° 85° Clear NNE   6 18% 40°
LEWISTOWN, MT 59457 weather forecast Day 2, 18 hours 6 PM 90° 86° Clear 2%

0% Thunder
( 8% severe)
E   7 17% 40°
LEWISTOWN, MT 59457 weather forecast Day 2, 21 hours 9 PM 77° 78° Partly Cloudy E   8 32% 45°

LEWISTOWN, MT extended weather forecast

Tuesday
28 JUL 2026
Wednesday
29 JUL 2026
Thursday
30 JUL 2026
Friday
31 JUL 2026
Saturday
1 AUG 2026
Low 56° Low 55° Low 55° Low 56° Low 57°
High 92° High 91° High 90° High 90° High 91°
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
Partly Cloudy
7% Rain
Partly Cloudy
10% Rain
Partly Cloudy
12% Rain
Clear
5% Rain
Clear
4% Rain
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