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.

Monday
20th Apr
22

7

7

6
Tuesday
21st Apr
26

8

11

6
Wednesday
22nd Apr
24

6

10

7
Thursday
23rd Apr
4

-2

0

4
Friday
24th Apr
2

-4

4

6

5-day weather forecast updated at 04:03 on Monday 20th 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 Monday 20th April 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 22°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

22
°C maximum temperature
7
°C minimum temperature
broken clouds
7
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from SW

Lewistown weather for Tuesday 21st April 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 26°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south.

26
°C maximum temperature
8
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from S

Lewistown weather for Wednesday 22nd April 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 24°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a fresh breeze of 34 kph from the west.

24
°C maximum temperature
6
°C minimum temperature
sunshine and showers
10
hours of sunshine
7
UV index (High)
85
% chance of some rain
<5
mm of rainfall expected
24
°C wind chill
34
kph wind from W

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 no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 88% chance of some sleet or snow and a strong breeze of 43 kph from the north-west.

4
°C maximum temperature
-2
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
4
UV index (Moderate)
88
% chance of some sleet or snow
<20
mm of sleet/snow expected
-2
°C wind chill
43
kph wind from NW

Lewistown weather for Friday 24th April 2026

Expect mostly cloudy with light snow in Lewistown, Montana with a maximum temperature of 2°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 2-5 cm of snow expected with 58% chance of some snow and a moderate breeze of 28 kph from the north-west.