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
21st Dec
43

27

1

0
Monday
22nd Dec
46

28

3

1
Tuesday
23rd Dec
48

30

1

1
Wednesday
24th Dec
55

32

2

1
Thursday
25th Dec
41

30

2

1

5-day weather forecast updated at 04:03 on Monday 22nd 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 Sunday 21st December 2025

Expect broken clouds in Lewistown, Montana with a maximum temperature of 43°F and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the south.

43
°F maximum temperature
27
°F minimum temperature
broken clouds
1
hour of sunshine
0
UV index (None)
0
mm of rainfall expected
37
°F wind chill
11
mph wind from S

Lewistown weather for Monday 22nd December 2025

Expect broken clouds in Lewistown, Montana with a maximum temperature of 46°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 13 mph from the west.

46
°F maximum temperature
28
°F minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
39
°F wind chill
13
mph wind from W

Lewistown weather for Tuesday 23rd December 2025

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

48
°F maximum temperature
30
°F minimum temperature
broken clouds
1
hour of sunshine
1
UV index (Low)
0
mm of rainfall expected
45
°F wind chill
8
mph wind from S

Lewistown weather for Wednesday 24th December 2025

Expect broken clouds in Lewistown, Montana with a maximum temperature of 55°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the south.

55
°F maximum temperature
32
°F minimum temperature
broken clouds
2
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
14
mph wind from S

Lewistown weather for Thursday 25th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 41°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 5-10 mm of sleet/snow expected with 32% chance of some sleet or snow and a gentle breeze of 9 mph from the west.