Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 36°F. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Monday
12th Oct
36

25

1

4
Tuesday
13th Oct
46

25

11

5
Wednesday
14th Oct
55

28

11

4
Thursday
15th Oct
52

32

11

4
Friday
16th Oct
66

34

11

5

5-day weather forecast updated at 04:02 on Monday 12th October 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 Monday 12th October 2026

Expect mostly cloudy with snow in Lewistown, Montana with a maximum temperature of 36°F, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 cm of snow expected with 13% chance of some snow and a light breeze of 5 mph from the north-west.

36
°F maximum temperature
25
°F minimum temperature
mostly cloudy with snow
1
hour of sunshine
4
UV index (Moderate)
13
% chance of some snow
<10
cm of snow expected
30
°F wind chill
5
mph wind from NW

Lewistown weather for Tuesday 13th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 46°F, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 3 mph from the west.

46
°F maximum temperature
25
°F minimum temperature
clear skies
11
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
45
°F wind chill
3
mph wind from W

Lewistown weather for Wednesday 14th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 55°F, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the west.

55
°F maximum temperature
28
°F minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
55
°F wind chill
4
mph wind from W

Lewistown weather for Thursday 15th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 52°F, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the west.

52
°F maximum temperature
32
°F minimum temperature
scattered clouds
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
52
°F wind chill
4
mph wind from W

Lewistown weather for Friday 16th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 66°F, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 10 mph from the south.