West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 9°C. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Monday
18th May
9

-5

5

6
Tuesday
19th May
12

-7

6

7
Wednesday
20th May
14

-1

1

5
Thursday
21st May
15

-1

4

5
Friday
22nd May
17

-2

9

7

5-day weather forecast updated at 04:02 on Monday 18th May 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 Monday 18th May 2026

Expect mostly cloudy with light snow in West Yellowstone, Montana with a maximum temperature of 9°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 4% chance of some snow and a moderate breeze of 23 kph from the north.

9
°C maximum temperature
-5
°C minimum temperature
mostly cloudy with light snow
5
hours of sunshine
6
UV index (High)
4
% chance of some snow
<2
cm of snow expected
5
°C wind chill
23
kph wind from N

West Yellowstone weather for Tuesday 19th May 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 12°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

12
°C maximum temperature
-7
°C minimum temperature
broken clouds
6
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from SW

West Yellowstone weather for Wednesday 20th May 2026

Expect mostly cloudy with light rain in West Yellowstone, Montana with a maximum temperature of 14°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a gentle breeze of 16 kph from the west.

14
°C maximum temperature
-1
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
5
UV index (Moderate)
40
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
16
kph wind from W

West Yellowstone weather for Thursday 21st May 2026

Expect cloudy with sleet or snow in West Yellowstone, Montana with a maximum temperature of 15°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 18% chance of some sleet or snow and a gentle breeze of 17 kph from the north.

15
°C maximum temperature
-1
°C minimum temperature
cloudy with sleet or snow
4
hours of sunshine
5
UV index (Moderate)
18
% chance of some sleet or snow
<5
mm of sleet/snow expected
15
°C wind chill
17
kph wind from N

West Yellowstone weather for Friday 22nd May 2026

Expect scattered clouds in West Yellowstone, Montana with a maximum temperature of 17°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.