Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 12°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Saturday
10th Oct
12

0

1

2
Sunday
11th Oct
2

-2

0

2
Monday
12th Oct
2

-3

0

4
Tuesday
13th Oct
8

-3

9

4
Wednesday
14th Oct
13

0

11

4

5-day weather forecast updated at 04:02 on Saturday 10th 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 Saturday 10th October 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 12°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 83% chance of some sleet or snow and a gentle breeze of 17 kph from the north-west.

12
°C maximum temperature
0
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
2
UV index (Low)
83
% chance of some sleet or snow
<10
mm of sleet/snow expected
0
no heat & humidity
17
kph wind from NW

Lewistown weather for Sunday 11th October 2026

Expect cloudy with some snow in Lewistown, Montana with a maximum temperature of 2°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 cm of snow expected with 100% chance of some snow and a light breeze of 11 kph from the north-east.

2
°C maximum temperature
-2
°C minimum temperature
cloudy with some snow
0
hours of sunshine
2
UV index (Low)
100
% chance of some snow
<20
cm of snow expected
-1
°C wind chill
11
kph wind from NE

Lewistown weather for Monday 12th October 2026

Expect mostly cloudy with snow in Lewistown, Montana with a maximum temperature of 2°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 5-10 cm of snow expected with 54% chance of some snow and little or no wind of 6 kph from the north-east.

2
°C maximum temperature
-3
°C minimum temperature
mostly cloudy with snow
0
hours of sunshine
4
UV index (Moderate)
54
% chance of some snow
<10
cm of snow expected
0
°C wind chill
6
kph wind from NE

Lewistown weather for Tuesday 13th October 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 8°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the south.

8
°C maximum temperature
-3
°C minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
8
°C wind chill
4
kph wind from S

Lewistown weather for Wednesday 14th October 2026

Expect clear skies in Lewistown, Montana with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.