Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 22°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Wednesday
7th Oct
22

9

9

4
Thursday
8th Oct
23

8

10

4
Friday
9th Oct
27

10

9

3
Saturday
10th Oct
14

0

0

3
Sunday
11th Oct
0

-2

0

3

5-day weather forecast updated at 04:02 on Wednesday 7th 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 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 light breeze of 11 kph from the south-east.

22
°C maximum temperature
9
°C minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
11
kph wind from SE

Lewistown weather for Thursday 8th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south.

23
°C maximum temperature
8
°C minimum temperature
clear skies
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from S

Lewistown weather for Friday 9th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 27°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the south-west.

27
°C maximum temperature
10
°C minimum temperature
scattered clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
27
°C wind chill
28
kph wind from SW

Lewistown weather for Saturday 10th October 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 86% chance of some sleet or snow and a moderate breeze of 20 kph from the north-west.

14
°C maximum temperature
0
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
3
UV index (Moderate)
86
% chance of some sleet or snow
<5
mm of sleet/snow expected
0
no heat & humidity
20
kph wind from NW

Lewistown weather for Sunday 11th October 2026

Expect cloudy with some snow in Lewistown, Montana with a maximum temperature of 0°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 10-20 cm of snow expected with 89% chance of some snow and a gentle breeze of 14 kph from the north.