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.

Wednesday
21st Jan
-3

-9

1

1
Thursday
22nd Jan
-9

-18

4

1
Friday
23rd Jan
-10

-20

4

1
Saturday
24th Jan
-5

-15

0

1
Sunday
25th Jan
0

-12

3

1

5-day weather forecast updated at 04:04 on Wednesday 21st January 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 Wednesday 21st January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of -3°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 cm of snow expected and a fresh breeze of 31 kph from the north-west.

-3
°C maximum temperature
-9
°C minimum temperature
broken clouds
1
hour of sunshine
1
UV index (Low)
0
cm of snow expected
-10
°C wind chill
31
kph wind from NW

Lewistown weather for Thursday 22nd January 2026

Expect clear skies with flurries of snow 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 cm of snow expected with 8% chance of some snow and a gentle breeze of 19 kph from the north-west.

-9
°C maximum temperature
-18
°C minimum temperature
clear skies with flurries of snow
4
hours of sunshine
1
UV index (Low)
8
% chance of some snow
<2
cm of snow expected
-16
°C wind chill
19
kph wind from NW

Lewistown weather for Friday 23rd January 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of -10°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 12 kph from the north-west.

-10
°C maximum temperature
-20
°C minimum temperature
broken clouds
4
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-16
°C wind chill
12
kph wind from NW

Lewistown weather for Saturday 24th January 2026

Expect mostly cloudy with light snow in Lewistown, Montana with a maximum temperature of -5°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 cm of snow expected with 46% chance of some snow and a moderate breeze of 25 kph from the north-west.

-5
°C maximum temperature
-15
°C minimum temperature
mostly cloudy with light snow
0
hours of sunshine
1
UV index (Low)
46
% chance of some snow
<5
cm of snow expected
-12
°C wind chill
25
kph wind from NW

Lewistown weather for Sunday 25th January 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 0°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 5-10 cm of snow expected with 12% chance of some snow and a gentle breeze of 18 kph from the west.