Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 7°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Wednesday
10th Dec
7

-5

0

0
Thursday
11th Dec
8

-8

0

0
Friday
12th Dec
-4

-11

0

1
Saturday
13th Dec
-1

-13

1

1
Sunday
14th Dec
7

0

2

1

5-day weather forecast updated at 04:04 on Wednesday 10th December 2025 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 10th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 7°C and no hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 82% chance of some sleet or snow and a moderate breeze of 27 kph from the west.

7
°C maximum temperature
-5
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
0
UV index (None)
82
% chance of some sleet or snow
<2
mm of sleet/snow expected
4
°C wind chill
27
kph wind from W

Lewistown weather for Thursday 11th December 2025

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 8°C and no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 98% chance of some sleet or snow and a fresh breeze of 37 kph from the west.

8
°C maximum temperature
-8
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
0
UV index (None)
98
% chance of some sleet or snow
<20
mm of sleet/snow expected
4
°C wind chill
37
kph wind from W

Lewistown weather for Friday 12th December 2025

Expect cloudy with some snow in Lewistown, Montana with a maximum temperature of -4°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 cm of snow expected with 99% chance of some snow and a gentle breeze of 13 kph from the east.

-4
°C maximum temperature
-11
°C minimum temperature
cloudy with some snow
0
hours of sunshine
1
UV index (Low)
99
% chance of some snow
<30
cm of snow expected
-8
°C wind chill
13
kph wind from E

Lewistown weather for Saturday 13th December 2025

Expect mostly cloudy with light snow in Lewistown, Montana with a maximum temperature of -1°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 39% chance of some snow and a gentle breeze of 14 kph from the south.

-1
°C maximum temperature
-13
°C minimum temperature
mostly cloudy with light snow
1
hour of sunshine
1
UV index (Low)
39
% chance of some snow
<2
cm of snow expected
-5
°C wind chill
14
kph wind from S

Lewistown weather for Sunday 14th December 2025

Expect broken clouds in Lewistown, Montana with a maximum temperature of 7°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the south-west.