Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 50°F. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Wednesday
31st Dec
50

32

8

1
Thursday
1st Jan
48

28

3

1
Friday
2nd Jan
48

36

4

1
Saturday
3rd Jan
54

34

1

1
Sunday
4th Jan
39

23

8

1

5-day weather forecast updated at 04:03 on Tuesday 30th December 2025 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 Wednesday 31st December 2025

Expect clear skies in Lewistown, Montana with a maximum temperature of 50°F, maximum UV of 1 (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.

50
°F maximum temperature
32
°F minimum temperature
clear skies
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
9
mph wind from SW

Lewistown weather for Thursday 1st January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 48°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the south-west.

48
°F maximum temperature
28
°F minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
45
°F wind chill
8
mph wind from SW

Lewistown weather for Friday 2nd January 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 48°F, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a gentle breeze of 12 mph from the south-west.

48
°F maximum temperature
36
°F minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
5
% chance of some rain
<2
mm of rainfall expected
43
°F wind chill
12
mph wind from SW

Lewistown weather for Saturday 3rd January 2026

Expect mostly cloudy with light rain in Lewistown, Montana with a maximum temperature of 54°F, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a moderate breeze of 16 mph from the south-west.

54
°F maximum temperature
34
°F minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
20
% chance of some rain
<2
mm of rainfall expected
54
°F wind chill
16
mph wind from SW

Lewistown weather for Sunday 4th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 39°F, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 18 mph from the west.