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.

Monday
9th Mar
3

-5

5

3
Tuesday
10th Mar
2

-6

4

2
Wednesday
11th Mar
6

-7

1

2
Thursday
12th Mar
9

-3

0

2
Friday
13th Mar
3

-4

0

2

5-day weather forecast updated at 04:03 on Monday 9th 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 Monday 9th March 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 3°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 31% chance of some sleet or snow and a fresh breeze of 33 kph from the west.

3
°C maximum temperature
-5
°C minimum temperature
cloudy with sleet or snow
5
hours of sunshine
3
UV index (Moderate)
31
% chance of some sleet or snow
<5
mm of sleet/snow expected
-3
°C wind chill
33
kph wind from W

Lewistown weather for Tuesday 10th March 2026

Expect mostly cloudy with light snow in Lewistown, Montana with a maximum temperature of 2°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 40% chance of some snow and a moderate breeze of 23 kph from the west.

2
°C maximum temperature
-6
°C minimum temperature
mostly cloudy with light snow
4
hours of sunshine
2
UV index (Low)
40
% chance of some snow
<2
cm of snow expected
-3
°C wind chill
23
kph wind from W

Lewistown weather for Wednesday 11th March 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 6°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 32 kph from the south-west.

6
°C maximum temperature
-7
°C minimum temperature
broken clouds
1
hour of sunshine
2
UV index (Low)
0
mm of rainfall expected
1
°C wind chill
32
kph wind from SW

Lewistown weather for Thursday 12th March 2026

Expect cloudy with sleet or snow in Lewistown, Montana with a maximum temperature of 9°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 79% chance of some sleet or snow and a moderate gale of 52 kph from the west.

9
°C maximum temperature
-3
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
2
UV index (Low)
79
% chance of some sleet or snow
<5
mm of sleet/snow expected
4
°C wind chill
52
kph wind from W

Lewistown weather for Friday 13th March 2026

Expect cloudy with some snow in Lewistown, Montana with a maximum temperature of 3°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 cm of snow expected with 77% chance of some snow and a gentle breeze of 14 kph from the west.