West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 25°C. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Monday
17th Aug
25

7

6

7
Tuesday
18th Aug
25

9

9

8
Wednesday
19th Aug
26

5

10

8
Thursday
20th Aug
28

6

8

7
Friday
21st Aug
28

9

8

7

5-day weather forecast updated at 04:03 on Monday 17th August 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 17th August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 25°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a light breeze of 12 kph from the south-west.

25
°C maximum temperature
7
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
26
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
12
kph wind from SW

West Yellowstone weather for Tuesday 18th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 25°C, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

25
°C maximum temperature
9
°C minimum temperature
broken clouds
9
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
25
°C wind chill
12
kph wind from W

West Yellowstone weather for Wednesday 19th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 26°C, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

26
°C maximum temperature
5
°C minimum temperature
broken clouds
10
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
26
°C wind chill
13
kph wind from W

West Yellowstone weather for Thursday 20th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

28
°C maximum temperature
6
°C minimum temperature
broken clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from SW

West Yellowstone weather for Friday 21st August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a light breeze of 7 kph from the north-east.