Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 5°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Monday
29th Dec
5

-7

8

1
Tuesday
30th Dec
7

-2

8

1
Wednesday
31st Dec
10

-1

8

1
Thursday
1st Jan
9

-2

4

1
Friday
2nd Jan
10

-1

8

1

5-day weather forecast updated at 04:04 on Monday 29th December 2025 GMT

More about Lewistown

Lewistown by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

Travelbag: up to 50% off 2026 holidays

Sale

Save up to 50% on 2026 holidays & tours with Travelbag
Book selected stays in popular destinations around the world
Travel between 1st Jan & 31st Dec 2026 (inclusive)

Go to Travelbag deal >>

Expires at 23:59 on Saturday 31st Jan 2026 · View all Travelbag offers

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 29th December 2025

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 5°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

5
°C maximum temperature
-7
°C minimum temperature
scattered clouds
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
1
°C wind chill
14
kph wind from SW

Lewistown weather for Tuesday 30th December 2025

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

7
°C maximum temperature
-2
°C minimum temperature
scattered clouds
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
4
°C wind chill
16
kph wind from SW

Lewistown weather for Wednesday 31st December 2025

Expect clear skies in Lewistown, Montana with a maximum temperature of 10°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

10
°C maximum temperature
-1
°C minimum temperature
clear skies
8
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from SW

Lewistown weather for Thursday 1st January 2026

Expect sunshine and showers in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 11 kph from the south.

9
°C maximum temperature
-2
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
25
% chance of some rain
<2
mm of rainfall expected
7
°C wind chill
11
kph wind from S

Lewistown weather for Friday 2nd January 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 10°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 25% chance of some sleet or snow and a gentle breeze of 16 kph from the south-west.