Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 17°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Saturday
3rd Oct
17

8

9

4
Sunday
4th Oct
23

6

11

4
Monday
5th Oct
27

13

11

4
Tuesday
6th Oct
24

12

11

4
Wednesday
7th Oct
22

10

9

4

5-day weather forecast updated at 04:02 on Saturday 3rd October 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 3rd October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

17
°C maximum temperature
8
°C minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from W

Lewistown weather for Sunday 4th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

23
°C maximum temperature
6
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from SE

Lewistown weather for Monday 5th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 27°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 29 kph from the west.

27
°C maximum temperature
13
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
29
kph wind from W

Lewistown weather for Tuesday 6th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

24
°C maximum temperature
12
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
24
°C wind chill
14
kph wind from SW

Lewistown weather for Wednesday 7th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north-west.