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.

Sunday
11th Oct
36

28

0

1
Monday
12th Oct
36

27

2

4
Tuesday
13th Oct
45

25

11

4
Wednesday
14th Oct
54

30

9

4
Thursday
15th Oct
52

34

11

3

5-day weather forecast updated at 04:02 on Sunday 11th 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 Sunday 11th October 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 36°F, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 100% chance of some sleet or snow and a light breeze of 6 mph from the north-east.

36
°F maximum temperature
28
°F minimum temperature
cloudy with sleet or snow
0
hours of sunshine
1
UV index (Low)
100
% chance of some sleet or snow
<20
mm of sleet/snow expected
30
°F wind chill
6
mph wind from NE

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 2 hours of bright sunshine. There are 5-10 cm of snow expected with 39% chance of some snow and little or no wind of 4 mph from the north-west.

36
°F maximum temperature
27
°F minimum temperature
mostly cloudy with snow
2
hours of sunshine
4
UV index (Moderate)
39
% chance of some snow
<10
cm of snow expected
32
°F wind chill
4
mph wind from NW

Lewistown weather for Tuesday 13th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 45°F, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 2 mph from the south.

45
°F maximum temperature
25
°F minimum temperature
scattered clouds
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
45
°F wind chill
2
mph wind from S

Lewistown weather for Wednesday 14th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 54°F, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south-west.

54
°F maximum temperature
30
°F minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
6
mph wind from SW

Lewistown weather for Thursday 15th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 52°F, maximum UV of 3 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the west.