Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 13°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Tuesday
13th Jan
13

4

1

1
Wednesday
14th Jan
16

1

8

1
Thursday
15th Jan
7

-3

6

1
Friday
16th Jan
4

-7

8

1
Saturday
17th Jan
9

-3

5

1

5-day weather forecast updated at 04:05 on Monday 12th 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 Tuesday 13th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 13°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 30 kph from the west.

13
°C maximum temperature
4
°C minimum temperature
broken clouds
1
hour of sunshine
1
UV index (Low)
0
mm of rainfall expected
13
°C wind chill
30
kph wind from W

Lewistown weather for Wednesday 14th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 16°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.

16
°C maximum temperature
1
°C minimum temperature
scattered clouds
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
16
°C wind chill
26
kph wind from W

Lewistown weather for Thursday 15th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 29 kph from the north-west.

7
°C maximum temperature
-3
°C minimum temperature
scattered clouds
6
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
29
kph wind from NW

Lewistown weather for Friday 16th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 4°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the west.

4
°C maximum temperature
-7
°C minimum temperature
scattered clouds
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
-1
°C wind chill
27
kph wind from W

Lewistown weather for Saturday 17th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the west.