West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 20°C. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Thursday
17th Sep
20

3

4

5
Friday
18th Sep
18

4

1

4
Saturday
19th Sep
16

5

3

4
Sunday
20th Sep
18

2

6

5
Monday
21st Sep
20

0

8

6

5-day weather forecast updated at 04:03 on Thursday 17th September 2026 GMT

More about West Yellowstone

West Yellowstone 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 (West Yellowstone) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

West Yellowstone weather forecast by day

Below are the detailed weather forecasts for West Yellowstone for the next 5 days.

West Yellowstone weather for Thursday 17th September 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 59% chance of some rain and a light breeze of 9 kph from the south.

20
°C maximum temperature
3
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
5
UV index (Moderate)
59
% chance of some rain
<5
mm of rainfall expected
20
°C wind chill
9
kph wind from S

West Yellowstone weather for Friday 18th September 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 76% chance of some rain and a light breeze of 10 kph from the south.

18
°C maximum temperature
4
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
4
UV index (Moderate)
76
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
10
kph wind from S

West Yellowstone weather for Saturday 19th September 2026

Expect cloudy with some rain in West Yellowstone, Montana with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a light breeze of 8 kph from the west.

16
°C maximum temperature
5
°C minimum temperature
cloudy with some rain
3
hours of sunshine
4
UV index (Moderate)
82
% chance of some rain
<10
mm of rainfall expected
16
°C wind chill
8
kph wind from W

West Yellowstone weather for Sunday 20th September 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.

18
°C maximum temperature
2
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
8
kph wind from W

West Yellowstone weather for Monday 21st September 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 20°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-west.