Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 59°F. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Thursday
1st Oct
59

45

3

4
Friday
2nd Oct
72

45

8

4
Saturday
3rd Oct
64

48

9

4
Sunday
4th Oct
72

43

12

4
Monday
5th Oct
81

54

10

4

5-day weather forecast updated at 04:03 on Thursday 1st 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 Thursday 1st October 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 59°F, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-east.

59
°F maximum temperature
45
°F minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
9
mph wind from SE

Lewistown weather for Friday 2nd October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 72°F, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the west.

72
°F maximum temperature
45
°F minimum temperature
scattered clouds
8
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
mph wind from W

Lewistown weather for Saturday 3rd October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 64°F, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-east.

64
°F maximum temperature
48
°F minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
9
mph wind from SE

Lewistown weather for Sunday 4th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 72°F, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the south-east.

72
°F maximum temperature
43
°F minimum temperature
clear skies
12
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
7
mph wind from SE

Lewistown weather for Monday 5th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the west.