Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 23°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Thursday
22nd Oct
23

9

9

3
Friday
23rd Oct
11

-1

0

2
Saturday
24th Oct
5

-3

10

3
Sunday
25th Oct
5

-3

9

3
Monday
26th Oct
7

-3

9

2

5-day weather forecast updated at 04:07 on Thursday 22nd 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 Thursday 22nd October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 9 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
9
°C minimum temperature
scattered clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from SE

Lewistown weather for Friday 23rd October 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 11°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 100% chance of some sleet or snow and a fresh breeze of 37 kph from the north-west.

11
°C maximum temperature
-1
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
2
UV index (Low)
100
% chance of some sleet or snow
<20
mm of sleet/snow expected
11
°C wind chill
37
kph wind from NW

Lewistown weather for Saturday 24th October 2026

Expect clear skies with flurries of snow in Lewistown, Montana with a maximum temperature of 5°C, maximum UV of 3 (Moderate) and 10 hours of bright sunshine. There are 0-2 cm of snow expected with 6% chance of some snow and a fresh breeze of 29 kph from the west.

5
°C maximum temperature
-3
°C minimum temperature
clear skies with flurries of snow
10
hours of sunshine
3
UV index (Moderate)
6
% chance of some snow
<2
cm of snow expected
1
°C wind chill
29
kph wind from W

Lewistown weather for Sunday 25th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 5°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the east.

5
°C maximum temperature
-3
°C minimum temperature
scattered clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
3
°C wind chill
6
kph wind from E

Lewistown weather for Monday 26th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the south-east.