Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 2°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Monday
12th Oct
2

-4

1

4
Tuesday
13th Oct
8

-4

11

5
Wednesday
14th Oct
13

-2

11

4
Thursday
15th Oct
11

0

11

4
Friday
16th Oct
19

1

11

5

5-day weather forecast updated at 04:02 on Monday 12th 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 Monday 12th October 2026

Expect mostly cloudy with snow in Lewistown, Montana with a maximum temperature of 2°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 cm of snow expected with 13% chance of some snow and a light breeze of 8 kph from the north-west.

2
°C maximum temperature
-4
°C minimum temperature
mostly cloudy with snow
1
hour of sunshine
4
UV index (Moderate)
13
% chance of some snow
<10
cm of snow expected
-1
°C wind chill
8
kph wind from NW

Lewistown weather for Tuesday 13th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 8°C, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the west.

8
°C maximum temperature
-4
°C minimum temperature
clear skies
11
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
7
°C wind chill
5
kph wind from W

Lewistown weather for Wednesday 14th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the west.

13
°C maximum temperature
-2
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
13
°C wind chill
7
kph wind from W

Lewistown weather for Thursday 15th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 11°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the west.

11
°C maximum temperature
0
°C minimum temperature
scattered clouds
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
11
°C wind chill
7
kph wind from W

Lewistown weather for Friday 16th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.