Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 43°F. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Sunday
14th Dec
43

34

2

1
Monday
15th Dec
46

36

2

1
Tuesday
16th Dec
46

34

2

1
Wednesday
17th Dec
43

21

5

1
Thursday
18th Dec
36

18

3

1

5-day weather forecast updated at 04:04 on Sunday 14th December 2025 GMT

More about Lewistown

Lewistown by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

Auto Europe: Cheap car hire deals worldwide

Sale

Compare car hire prices to find lowest rate
Free cancellation up to 48 hours before pick up
Book car hire for over 20,000 destinations worldwide

Go to Auto Europe deal >>

View all Auto Europe offers

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 Sunday 14th December 2025

Expect broken clouds in Lewistown, Montana with a maximum temperature of 43°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 13 mph from the south-west.

43
°F maximum temperature
34
°F minimum temperature
broken clouds
2
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
36
°F wind chill
13
mph wind from SW

Lewistown weather for Monday 15th December 2025

Expect broken clouds in Lewistown, Montana with a maximum temperature of 46°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 18 mph from the south-west.

46
°F maximum temperature
36
°F minimum temperature
broken clouds
2
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
39
°F wind chill
18
mph wind from SW

Lewistown weather for Tuesday 16th December 2025

Expect mostly cloudy with light rain in Lewistown, Montana with a maximum temperature of 46°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 24% chance of some rain and a fresh breeze of 20 mph from the west.

46
°F maximum temperature
34
°F minimum temperature
mostly cloudy with light rain
2
hours of sunshine
1
UV index (Low)
24
% chance of some rain
<2
mm of rainfall expected
37
°F wind chill
20
mph wind from W

Lewistown weather for Wednesday 17th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 43°F, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 5-10 mm of sleet/snow expected with 55% chance of some sleet or snow and a moderate gale of 32 mph from the west.

43
°F maximum temperature
21
°F minimum temperature
cloudy with sleet or snow
5
hours of sunshine
1
UV index (Low)
55
% chance of some sleet or snow
<10
mm of sleet/snow expected
32
°F wind chill
32
mph wind from W

Lewistown weather for Thursday 18th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 36°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 33% chance of some sleet or snow and a moderate breeze of 16 mph from the south-west.