Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 68°F. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Wednesday
24th Jun
68

48

8

8
Thursday
25th Jun
66

50

5

6
Friday
26th Jun
73

50

5

4
Saturday
27th Jun
64

50

6

5
Sunday
28th Jun
59

46

3

4

5-day weather forecast updated at 04:03 on Wednesday 24th June 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 Wednesday 24th June 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 68°F, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the east.

68
°F maximum temperature
48
°F minimum temperature
broken clouds
8
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
9
mph wind from E

Lewistown weather for Thursday 25th June 2026

Expect isolated thunderstorms in Lewistown, Montana with a maximum temperature of 66°F, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and a gentle breeze of 9 mph from the south-east.

66
°F maximum temperature
50
°F minimum temperature
isolated thunderstorms
5
hours of sunshine
6
UV index (High)
86
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
9
mph wind from SE

Lewistown weather for Friday 26th June 2026

Expect isolated thunderstorms in Lewistown, Montana with a maximum temperature of 73°F, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 88% chance of some rain and a light breeze of 7 mph from the south.

73
°F maximum temperature
50
°F minimum temperature
isolated thunderstorms
5
hours of sunshine
4
UV index (Moderate)
88
% chance of some rain
<10
mm of rainfall expected
73
°F wind chill
7
mph wind from S

Lewistown weather for Saturday 27th June 2026

Expect isolated thunderstorms in Lewistown, Montana with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and a light breeze of 6 mph from the west.

64
°F maximum temperature
50
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
5
UV index (Moderate)
86
% chance of some rain
<10
mm of rainfall expected
64
°F wind chill
6
mph wind from W

Lewistown weather for Sunday 28th June 2026

Expect mostly cloudy with rain in Lewistown, Montana with a maximum temperature of 59°F, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a moderate breeze of 15 mph from the west.