Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 45°F. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Thursday
12th Feb
45

21

10

2
Friday
13th Feb
43

28

8

2
Saturday
14th Feb
45

30

2

2
Sunday
15th Feb
41

28

1

2
Monday
16th Feb
45

27

6

2

5-day weather forecast updated at 04:03 on Thursday 12th February 2026 GMT

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The 5-day weather forecast for Montana (Lewistown) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Lewistown weather forecast by day

Below are the detailed weather forecasts for Lewistown for the next 5 days.

Lewistown weather for Thursday 12th February 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 45°F, maximum UV of 2 (Low) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-west.

45
°F maximum temperature
21
°F minimum temperature
scattered clouds
10
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
39
°F wind chill
9
mph wind from SW

Lewistown weather for Friday 13th February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 43°F, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-west.

43
°F maximum temperature
28
°F minimum temperature
broken clouds
8
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
39
°F wind chill
9
mph wind from SW

Lewistown weather for Saturday 14th February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 45°F, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 12 mph from the south-west.

45
°F maximum temperature
30
°F minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
39
°F wind chill
12
mph wind from SW

Lewistown weather for Sunday 15th February 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 41°F, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of sleet/snow expected with 38% chance of some sleet or snow and a light breeze of 6 mph from the south.

41
°F maximum temperature
28
°F minimum temperature
cloudy with sleet or snow
1
hour of sunshine
2
UV index (Low)
38
% chance of some sleet or snow
<5
mm of sleet/snow expected
37
°F wind chill
6
mph wind from S

Lewistown weather for Monday 16th February 2026

Expect clear skies with flurries of snow in Lewistown, Montana with a maximum temperature of 45°F, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0-2 cm of snow expected with 18% chance of some snow and a gentle breeze of 9 mph from the east.