Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be -3°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Friday
20th Feb
-3

-17

3

2
Saturday
21st Feb
-5

-14

4

2
Sunday
22nd Feb
1

-14

9

3
Monday
23rd Feb
9

-2

5

3
Tuesday
24th Feb
7

-3

0

2

5-day weather forecast updated at 04:04 on Friday 20th February 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 Friday 20th February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of -3°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 13 kph from the south-east.

-3
°C maximum temperature
-17
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
cm of snow expected
-7
°C wind chill
13
kph wind from SE

Lewistown weather for Saturday 21st February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of -5°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 12 kph from the south-east.

-5
°C maximum temperature
-14
°C minimum temperature
broken clouds
4
hours of sunshine
2
UV index (Low)
0
cm of snow expected
-10
°C wind chill
12
kph wind from SE

Lewistown weather for Sunday 22nd February 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 1°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-east.

1
°C maximum temperature
-14
°C minimum temperature
scattered clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
-4
°C wind chill
17
kph wind from SE

Lewistown weather for Monday 23rd February 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the south-west.

9
°C maximum temperature
-2
°C minimum temperature
broken clouds
5
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
5
°C wind chill
23
kph wind from SW

Lewistown weather for Tuesday 24th February 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 45% chance of some sleet or snow and a fresh breeze of 33 kph from the west.