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.

Saturday
18th Apr
13

-3

13

6
Sunday
19th Apr
19

0

14

7
Monday
20th Apr
22

6

12

6
Tuesday
21st Apr
27

6

13

6
Wednesday
22nd Apr
25

8

6

5

5-day weather forecast updated at 04:03 on Saturday 18th April 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 18th April 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 13°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the west.

13
°C maximum temperature
-3
°C minimum temperature
scattered clouds
13
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
13
°C wind chill
19
kph wind from W

Lewistown weather for Sunday 19th April 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 19°C, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.

19
°C maximum temperature
0
°C minimum temperature
clear skies
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from S

Lewistown weather for Monday 20th April 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 22°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-west.

22
°C maximum temperature
6
°C minimum temperature
scattered clouds
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from NW

Lewistown weather for Tuesday 21st April 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 27°C, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.

27
°C maximum temperature
6
°C minimum temperature
scattered clouds
13
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
27
°C wind chill
14
kph wind from S

Lewistown weather for Wednesday 22nd April 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 55% chance of some rain and a moderate breeze of 24 kph from the west.