Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 11°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Sunday
7th Jun
11

4

3

3
Monday
8th Jun
20

2

8

8
Tuesday
9th Jun
18

9

6

4
Wednesday
10th Jun
13

6

4

5
Thursday
11th Jun
16

5

7

8

5-day weather forecast updated at 04:02 on Sunday 7th June 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 Sunday 7th June 2026

Expect mostly cloudy with rain in Lewistown, Montana with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 70% chance of some rain and a moderate breeze of 22 kph from the north-west.

11
°C maximum temperature
4
°C minimum temperature
mostly cloudy with rain
3
hours of sunshine
3
UV index (Moderate)
70
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
22
kph wind from NW

Lewistown weather for Monday 8th June 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 20°C, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

20
°C maximum temperature
2
°C minimum temperature
broken clouds
8
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
20
°C wind chill
15
kph wind from SW

Lewistown weather for Tuesday 9th June 2026

Expect isolated thunderstorms in Lewistown, Montana with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 14 kph from the west.

18
°C maximum temperature
9
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
4
UV index (Moderate)
80
% chance of some rain
<5
mm of rainfall expected
18
°C wind chill
14
kph wind from W

Lewistown weather for Wednesday 10th June 2026

Expect mostly cloudy with light rain in Lewistown, Montana with a maximum temperature of 13°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a fresh breeze of 34 kph from the west.

13
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
5
UV index (Moderate)
58
% chance of some rain
<5
mm of rainfall expected
13
°C wind chill
34
kph wind from W

Lewistown weather for Thursday 11th June 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 16°C, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 55% chance of some rain and a fresh breeze of 32 kph from the west.