Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 9°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Thursday
1st Jan
9

-2

3

1
Friday
2nd Jan
9

2

4

1
Saturday
3rd Jan
12

1

1

1
Sunday
4th Jan
4

-5

8

1

5-day weather forecast updated at 04:03 on Tuesday 30th December 2025 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 Thursday 1st January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

9
°C maximum temperature
-2
°C minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
13
kph wind from SW

Lewistown weather for Friday 2nd January 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 5% chance of some rain and a gentle breeze of 19 kph from the south-west.

9
°C maximum temperature
2
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
5
% chance of some rain
<2
mm of rainfall expected
6
°C wind chill
19
kph wind from SW

Lewistown weather for Saturday 3rd January 2026

Expect mostly cloudy with light rain in Lewistown, Montana with a maximum temperature of 12°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a moderate breeze of 26 kph from the south-west.

12
°C maximum temperature
1
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
20
% chance of some rain
<2
mm of rainfall expected
12
°C wind chill
26
kph wind from SW

Lewistown weather for Sunday 4th 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 fresh breeze of 29 kph from the west.