Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 8°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Tuesday
27th Oct
8

1

6

2
Wednesday
28th Oct
9

0

2

2
Thursday
29th Oct
4

-2

1

2
Friday
30th Oct
4

-3

2

1
Saturday
31st Oct
8

-2

1

2

5-day weather forecast updated at 04:02 on Tuesday 27th 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 Tuesday 27th October 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 8°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 15% chance of some rain and a fresh breeze of 31 kph from the west.

8
°C maximum temperature
1
°C minimum temperature
sunshine and showers
6
hours of sunshine
2
UV index (Low)
15
% chance of some rain
<5
mm of rainfall expected
4
°C wind chill
31
kph wind from W

Lewistown weather for Wednesday 28th October 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

9
°C maximum temperature
0
°C minimum temperature
broken clouds
2
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
6
°C wind chill
15
kph wind from SW

Lewistown weather for Thursday 29th October 2026

Expect overcast skies in Lewistown, Montana with a maximum temperature of 4°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the east.

4
°C maximum temperature
-2
°C minimum temperature
overcast skies
1
hour of sunshine
2
UV index (Low)
0
mm of rainfall expected
1
°C wind chill
12
kph wind from E

Lewistown weather for Friday 30th October 2026

Expect mostly cloudy with light snow in Lewistown, Montana with a maximum temperature of 4°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 24% chance of some snow and a gentle breeze of 13 kph from the east.

4
°C maximum temperature
-3
°C minimum temperature
mostly cloudy with light snow
2
hours of sunshine
1
UV index (Low)
24
% chance of some snow
<2
cm of snow expected
1
°C wind chill
13
kph wind from E

Lewistown weather for Saturday 31st October 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 8°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south-east.