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.

Sunday
25th Oct
5

-4

10

3
Monday
26th Oct
9

-2

8

3
Tuesday
27th Oct
7

0

2

2
Wednesday
28th Oct
9

1

3

2
Thursday
29th Oct
6

-1

1

2

5-day weather forecast updated at 04:02 on Sunday 25th 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 Sunday 25th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 5°C, maximum UV of 3 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the east.

5
°C maximum temperature
-4
°C minimum temperature
clear skies
10
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
2
°C wind chill
18
kph wind from E

Lewistown weather for Monday 26th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

9
°C maximum temperature
-2
°C minimum temperature
scattered clouds
8
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
7
°C wind chill
13
kph wind from SE

Lewistown weather for Tuesday 27th October 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 mm of sleet/snow expected with 80% chance of some sleet or snow and a moderate breeze of 25 kph from the west.

7
°C maximum temperature
0
°C minimum temperature
cloudy with sleet or snow
2
hours of sunshine
2
UV index (Low)
80
% chance of some sleet or snow
<10
mm of sleet/snow expected
3
°C wind chill
25
kph wind from W

Lewistown weather for Wednesday 28th October 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

9
°C maximum temperature
1
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
17
kph wind from W

Lewistown weather for Thursday 29th October 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 6°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-east.