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.

Friday
13th Feb
43

27

6

2
Saturday
14th Feb
45

30

2

2
Sunday
15th Feb
43

27

0

1
Monday
16th Feb
45

27

2

2
Tuesday
17th Feb
41

25

1

1

5-day weather forecast updated at 04:03 on Friday 13th 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 Friday 13th February 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 43°F, maximum UV of 2 (Low) and 6 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
27
°F minimum temperature
scattered clouds
6
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 gentle 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 43°F, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 66% chance of some sleet or snow and a light breeze of 7 mph from the south-west.

43
°F maximum temperature
27
°F minimum temperature
cloudy with sleet or snow
0
hours of sunshine
1
UV index (Low)
66
% chance of some sleet or snow
<2
mm of sleet/snow expected
39
°F wind chill
7
mph wind from SW

Lewistown weather for Monday 16th February 2026

45
°F maximum temperature
27
°F minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
39
°F wind chill
9
mph wind from S

Lewistown weather for Tuesday 17th February 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 41°F, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of sleet/snow expected with 72% chance of some sleet or snow and a gentle breeze of 10 mph from the east.