Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 6°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Wednesday
7th Jan
6

-5

6

1
Thursday
8th Jan
3

-5

3

1
Friday
9th Jan
3

-6

4

1
Saturday
10th Jan
9

-1

7

1
Sunday
11th Jan
12

-1

8

1

5-day weather forecast updated at 04:03 on Wednesday 7th 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 7th January 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 6°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a fresh breeze of 36 kph from the west.

6
°C maximum temperature
-5
°C minimum temperature
sunshine and showers
6
hours of sunshine
1
UV index (Low)
30
% chance of some rain
<2
mm of rainfall expected
1
°C wind chill
36
kph wind from W

Lewistown weather for Thursday 8th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 3°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the west.

3
°C maximum temperature
-5
°C minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
-3
°C wind chill
28
kph wind from W

Lewistown weather for Friday 9th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 3°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 30 kph from the west.

3
°C maximum temperature
-6
°C minimum temperature
broken clouds
4
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
-2
°C wind chill
30
kph wind from W

Lewistown weather for Saturday 10th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the west.

9
°C maximum temperature
-1
°C minimum temperature
scattered clouds
7
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
5
°C wind chill
24
kph wind from W

Lewistown weather for Sunday 11th January 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 12°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the west.