West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 24°C. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Tuesday
18th Aug
24

8

7

7
Wednesday
19th Aug
26

5

12

8
Thursday
20th Aug
28

6

10

9
Friday
21st Aug
29

9

9

9
Saturday
22nd Aug
24

11

4

7

5-day weather forecast updated at 04:03 on Tuesday 18th 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 18th August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 24°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 53% chance of some rain and a light breeze of 12 kph from the west.

24
°C maximum temperature
8
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
7
UV index (High)
53
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
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 12 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
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
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 9 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.

28
°C maximum temperature
6
°C minimum temperature
broken clouds
10
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
12
kph wind from SW

West Yellowstone weather for Friday 21st August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-east.

29
°C maximum temperature
9
°C minimum temperature
broken clouds
9
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
7
kph wind from NE

West Yellowstone weather for Saturday 22nd August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 24°C, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 14 kph from the south-west.