West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 73°F. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Sunday
16th Aug
73

41

10

7
Monday
17th Aug
77

45

6

7
Tuesday
18th Aug
77

48

9

8
Wednesday
19th Aug
79

41

10

8
Thursday
20th Aug
82

43

8

7

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

More about West Yellowstone

West Yellowstone by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

Intrepid Travel discount code: £200 off small group tours

Discount Code

Save EXTRA £200 on select small group tours worldwide
Min spend of £1,500 per person. T&Cs apply
Travel before 30th June 2027 (inclusive)

Show discount code

******011

Redeem Intrepid Travel discount code >>

Expires at 23:59 on Monday 31st Aug 2026 · View all Intrepid Travel offers

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 Sunday 16th August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 73°F, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 2-5 mm of rainfall expected with 25% chance of some rain and a light breeze of 7 mph from the south-west.

73
°F maximum temperature
41
°F minimum temperature
isolated thunderstorms
10
hours of sunshine
7
UV index (High)
25
% chance of some rain
<5
mm of rainfall expected
73
°F wind chill
7
mph wind from SW

West Yellowstone weather for Monday 17th August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 77°F, 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 7 mph from the south-west.

77
°F maximum temperature
45
°F 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
7
mph wind from SW

West Yellowstone weather for Tuesday 18th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 77°F, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the west.

77
°F maximum temperature
48
°F minimum temperature
broken clouds
9
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
77
°F wind chill
7
mph wind from W

West Yellowstone weather for Wednesday 19th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 79°F, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the west.

79
°F maximum temperature
41
°F minimum temperature
broken clouds
10
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
79
°F wind chill
8
mph wind from W

West Yellowstone weather for Thursday 20th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 82°F, 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 7 mph from the south-west.