West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 86°F. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Friday
21st Aug
86

50

10

9
Saturday
22nd Aug
79

54

6

7
Sunday
23rd Aug
77

48

7

8
Monday
24th Aug
77

43

8

8
Tuesday
25th Aug
77

43

10

8

5-day weather forecast updated at 04:03 on Friday 21st 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 Friday 21st August 2026

Expect scattered clouds in West Yellowstone, Montana with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 mph from the west.

86
°F maximum temperature
50
°F minimum temperature
scattered clouds
10
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
4
mph wind from W

West Yellowstone weather for Saturday 22nd August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 79°F, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 8 mph from the south-west.

79
°F maximum temperature
54
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
46
% chance of some rain
<2
mm of rainfall expected
79
°F wind chill
8
mph wind from SW

West Yellowstone weather for Sunday 23rd August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 77°F, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 48% chance of some rain and a gentle breeze of 10 mph from the south-west.

77
°F maximum temperature
48
°F minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
48
% chance of some rain
<2
mm of rainfall expected
77
°F wind chill
10
mph wind from SW

West Yellowstone weather for Monday 24th August 2026

Expect sunshine and showers in West Yellowstone, Montana with a maximum temperature of 77°F, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a light breeze of 7 mph from the south-west.

77
°F maximum temperature
43
°F minimum temperature
sunshine and showers
8
hours of sunshine
8
UV index (Very High)
40
% chance of some rain
<2
mm of rainfall expected
77
°F wind chill
7
mph wind from SW

West Yellowstone weather for Tuesday 25th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 77°F, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the west.