West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 30°C. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Tuesday
11th Aug
30

6

9

8
Wednesday
12th Aug
27

9

6

6
Thursday
13th Aug
23

6

6

6
Friday
14th Aug
19

5

5

5
Saturday
15th Aug
22

4

5

7

5-day weather forecast updated at 04:03 on Tuesday 11th 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 Tuesday 11th August 2026

Expect scattered clouds in West Yellowstone, Montana with a maximum temperature of 30°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the west.

30
°C maximum temperature
6
°C minimum temperature
scattered clouds
9
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
16
kph wind from W

West Yellowstone weather for Wednesday 12th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

27
°C maximum temperature
9
°C minimum temperature
broken clouds
6
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
13
kph wind from SW

West Yellowstone weather for Thursday 13th August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 23°C, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 70% chance of some rain and a light breeze of 11 kph from the south-west.

23
°C maximum temperature
6
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
70
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
11
kph wind from SW

West Yellowstone weather for Friday 14th August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 80% chance of some rain and a light breeze of 9 kph from the south-west.

19
°C maximum temperature
5
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
5
UV index (Moderate)
80
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
9
kph wind from SW

West Yellowstone weather for Saturday 15th August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 22°C, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 60% chance of some rain and a light breeze of 9 kph from the south-west.