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.

Saturday
21st Feb
-5

-16

9

2
Sunday
22nd Feb
1

-12

1

3
Monday
23rd Feb
7

-2

4

2
Tuesday
24th Feb
8

0

4

2
Wednesday
25th Feb
1

-4

7

2

5-day weather forecast updated at 04:05 on Saturday 21st February 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 Saturday 21st February 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of -5°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 14 kph from the east.

-5
°C maximum temperature
-16
°C minimum temperature
scattered clouds
9
hours of sunshine
2
UV index (Low)
0
cm of snow expected
-10
°C wind chill
14
kph wind from E

Lewistown weather for Sunday 22nd February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 1°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south-east.

1
°C maximum temperature
-12
°C minimum temperature
broken clouds
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
-4
°C wind chill
18
kph wind from SE

Lewistown weather for Monday 23rd February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-west.

7
°C maximum temperature
-2
°C minimum temperature
broken clouds
4
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
22
kph wind from SW

Lewistown weather for Tuesday 24th February 2026

Expect mostly cloudy with light rain in Lewistown, Montana with a maximum temperature of 8°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 49% chance of some rain and a moderate breeze of 26 kph from the west.

8
°C maximum temperature
0
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
2
UV index (Low)
49
% chance of some rain
<5
mm of rainfall expected
4
°C wind chill
26
kph wind from W

Lewistown weather for Wednesday 25th February 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 1°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a strong breeze of 41 kph from the west.