Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 33°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Tuesday
28th Jul
33

14

12

7
Wednesday
29th Jul
31

15

7

7
Thursday
30th Jul
32

16

12

6
Friday
31st Jul
32

15

12

6
Saturday
1st Aug
36

16

13

7

5-day weather forecast updated at 04:03 on Tuesday 28th July 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 Tuesday 28th July 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 33°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-west.

33
°C maximum temperature
14
°C minimum temperature
scattered clouds
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from SW

Lewistown weather for Wednesday 29th July 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south.

31
°C maximum temperature
15
°C minimum temperature
scattered clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
10
kph wind from S

Lewistown weather for Thursday 30th July 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 32°C, moderate levels of heat & humidity, 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.

32
°C maximum temperature
16
°C minimum temperature
scattered clouds
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from NW

Lewistown weather for Friday 31st July 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and a light breeze of 11 kph from the south-east.

32
°C maximum temperature
15
°C minimum temperature
sunshine and showers
12
hours of sunshine
6
UV index (High)
12
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from SE

Lewistown weather for Saturday 1st August 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 36°C, high levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.