Lewistown weather live forecast

Today's maximum temperature in Lewistown is expected to be 18°C. Select a day from the live weather forecast for Lewistown, Montana, USA for more weather parameters.

Friday
10th Apr
18

-1

11

6
Saturday
11th Apr
21

6

8

6
Sunday
12th Apr
13

6

3

5
Monday
13th Apr
10

4

3

1
Tuesday
14th Apr
13

2

7

5

5-day weather forecast updated at 04:03 on Friday 10th April 2026 GMT

More about Lewistown

Lewistown by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

GO Airport Shuttle discount code: 5% off airport transfers

Discount Code

Save EXTRA 5% on airport transfers worldwide
Book private taxis & shuttle buses with discount code
Enter in coupon box on 'Reservations' page

Show discount code

******WEB

Redeem GO Airport Shuttle discount code >>

Expires at 23:59 on Thursday 31st Dec 2026

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 Friday 10th April 2026

Expect scattered clouds in Lewistown, Montana with a maximum temperature of 18°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-east.

18
°C maximum temperature
-1
°C minimum temperature
scattered clouds
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
18
°C wind chill
16
kph wind from SE

Lewistown weather for Saturday 11th April 2026

Expect isolated thunderstorms in Lewistown, Montana with a maximum temperature of 21°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and a moderate breeze of 21 kph from the west.

21
°C maximum temperature
6
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
6
UV index (High)
36
% chance of some rain
<2
mm of rainfall expected
21
°C wind chill
21
kph wind from W

Lewistown weather for Sunday 12th April 2026

Expect mostly cloudy with light rain in Lewistown, Montana with a maximum temperature of 13°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 81% chance of some rain and a gentle breeze of 19 kph from the west.

13
°C maximum temperature
6
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
5
UV index (Moderate)
81
% chance of some rain
<5
mm of rainfall expected
13
°C wind chill
19
kph wind from W

Lewistown weather for Monday 13th April 2026

Expect isolated thunderstorms in Lewistown, Montana with a maximum temperature of 10°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 80% chance of some rain and a gentle breeze of 19 kph from the west.

10
°C maximum temperature
4
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
1
UV index (Low)
80
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
19
kph wind from W

Lewistown weather for Tuesday 14th April 2026

Expect broken clouds in Lewistown, Montana with a maximum temperature of 13°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the west.