Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 4°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Thursday
5th Mar
4

0

1

1
Friday
6th Mar
6

-3

4

3
Saturday
7th Mar
11

-1

6

3
Sunday
8th Mar
14

-1

5

3
Monday
9th Mar
3

-5

2

2

5-day weather forecast updated at 04:03 on Friday 6th March 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 Thursday 5th March 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 4°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of sleet/snow expected with 100% chance of some sleet or snow and a gentle breeze of 13 kph from the north-west.

4
°C maximum temperature
0
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
1
UV index (Low)
100
% chance of some sleet or snow
<2
mm of sleet/snow expected
1
°C wind chill
13
kph wind from NW

Lewistown weather for Friday 6th March 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 6°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.

6
°C maximum temperature
-3
°C minimum temperature
broken clouds
4
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
2
°C wind chill
21
kph wind from W

Lewistown weather for Saturday 7th March 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 31 kph from the west.

11
°C maximum temperature
-1
°C minimum temperature
scattered clouds
6
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
31
kph wind from W

Lewistown weather for Sunday 8th March 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 44 kph from the west.

14
°C maximum temperature
-1
°C minimum temperature
broken clouds
5
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
44
kph wind from W

Lewistown weather for Monday 9th March 2026

Expect mostly cloudy with light snow in Lewistown, Montana with a maximum temperature of 3°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 2-5 cm of snow expected with 47% chance of some snow and a moderate breeze of 22 kph from the west.