Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 5°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Wednesday
28th Jan
5

-6

0

1
Thursday
29th Jan
5

-3

6

2
Friday
30th Jan
7

0

5

2
Saturday
31st Jan
8

-2

3

1
Sunday
1st Feb
9

-4

1

2

5-day weather forecast updated at 04:03 on Thursday 29th 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 28th January 2026

Expect mostly cloudy with light snow in Lewistown, Montana with a maximum temperature of 5°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 20% chance of some snow and a moderate breeze of 24 kph from the west.

5
°C maximum temperature
-6
°C minimum temperature
mostly cloudy with light snow
0
hours of sunshine
1
UV index (Low)
20
% chance of some snow
<2
cm of snow expected
0
°C wind chill
24
kph wind from W

Lewistown weather for Thursday 29th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 5°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the west.

5
°C maximum temperature
-3
°C minimum temperature
broken clouds
6
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
°C wind chill
23
kph wind from W

Lewistown weather for Friday 30th January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south-west.

7
°C maximum temperature
0
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
18
kph wind from SW

Lewistown weather for Saturday 31st January 2026

Expect mostly cloudy with light rain in Lewistown, Montana with a maximum temperature of 8°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 15% chance of some rain and a moderate breeze of 28 kph from the west.

8
°C maximum temperature
-2
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
1
UV index (Low)
15
% chance of some rain
<2
mm of rainfall expected
5
°C wind chill
28
kph wind from W

Lewistown weather for Sunday 1st February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.