Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 4°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Thursday
23rd Apr
4

-3

6

4
Friday
24th Apr
1

-6

2

4
Saturday
25th Apr
3

-7

4

3
Sunday
26th Apr
3

-8

2

4
Monday
27th Apr
7

-4

1

5

5-day weather forecast updated at 04:03 on Thursday 23rd April 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 23rd April 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 4°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 47% chance of some sleet or snow and a strong breeze of 42 kph from the north-west.

4
°C maximum temperature
-3
°C minimum temperature
cloudy with sleet or snow
6
hours of sunshine
4
UV index (Moderate)
47
% chance of some sleet or snow
<20
mm of sleet/snow expected
-2
°C wind chill
42
kph wind from NW

Lewistown weather for Friday 24th April 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 1°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 35 kph from the north-west.

1
°C maximum temperature
-6
°C minimum temperature
broken clouds
2
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
-5
°C wind chill
35
kph wind from NW

Lewistown weather for Saturday 25th April 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 3°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.

3
°C maximum temperature
-7
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
-2
°C wind chill
20
kph wind from NW

Lewistown weather for Sunday 26th April 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 3°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.

3
°C maximum temperature
-8
°C minimum temperature
broken clouds
2
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
°C wind chill
12
kph wind from NE

Lewistown weather for Monday 27th April 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-west.