West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 14°C. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Saturday
19th Sep
14

5

3

5
Sunday
20th Sep
14

2

2

2
Monday
21st Sep
18

0

10

6
Tuesday
22nd Sep
20

1

8

6
Wednesday
23rd Sep
21

2

10

6

5-day weather forecast updated at 04:03 on Saturday 19th September 2026 GMT

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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 Saturday 19th September 2026

Expect mostly cloudy with light rain in West Yellowstone, Montana with a maximum temperature of 14°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 67% chance of some rain and a light breeze of 8 kph from the west.

14
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
5
UV index (Moderate)
67
% chance of some rain
<5
mm of rainfall expected
14
°C wind chill
8
kph wind from W

West Yellowstone weather for Sunday 20th September 2026

Expect mostly cloudy with light rain in West Yellowstone, Montana with a maximum temperature of 14°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and little or no wind of 5 kph from the south-west.

14
°C maximum temperature
2
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
2
UV index (Low)
20
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
5
kph wind from SW

West Yellowstone weather for Monday 21st September 2026

Expect scattered clouds in West Yellowstone, Montana with a maximum temperature of 18°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-west.

18
°C maximum temperature
0
°C minimum temperature
scattered clouds
10
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from SW

West Yellowstone weather for Tuesday 22nd 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.

20
°C maximum temperature
1
°C minimum temperature
broken clouds
8
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
9
kph wind from SW

West Yellowstone weather for Wednesday 23rd September 2026

Expect scattered clouds in West Yellowstone, Montana with a maximum temperature of 21°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.