Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 14°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Wednesday
14th Jan
14

3

9

1
Thursday
15th Jan
7

-3

3

1
Friday
16th Jan
2

-6

3

1
Saturday
17th Jan
8

-5

5

1
Sunday
18th Jan
7

-4

8

1

5-day weather forecast updated at 04:04 on Wednesday 14th January 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 14th January 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 14°C, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the west.

14
°C maximum temperature
3
°C minimum temperature
clear skies
9
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
18
kph wind from W

Lewistown weather for Thursday 15th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 34 kph from the north-west.

7
°C maximum temperature
-3
°C minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
2
°C wind chill
34
kph wind from NW

Lewistown weather for Friday 16th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 2°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 33 kph from the north-west.

2
°C maximum temperature
-6
°C minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
-4
°C wind chill
33
kph wind from NW

Lewistown weather for Saturday 17th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 8°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the west.

8
°C maximum temperature
-5
°C minimum temperature
broken clouds
5
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
5
°C wind chill
23
kph wind from W

Lewistown weather for Sunday 18th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the west.