West Yellowstone weather live forecast

Today's maximum temperature in West Yellowstone is expected to be 26°C. Select a day from the live weather forecast for West Yellowstone, Montana, USA for more weather parameters.

Wednesday
19th Aug
26

7

13

8
Thursday
20th Aug
29

7

8

8
Friday
21st Aug
30

9

11

9
Saturday
22nd Aug
25

12

5

8
Sunday
23rd Aug
24

9

4

8

5-day weather forecast updated at 04:03 on Wednesday 19th 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 Wednesday 19th August 2026

Expect clear skies in West Yellowstone, Montana with a maximum temperature of 26°C, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

26
°C maximum temperature
7
°C minimum temperature
clear skies
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
26
°C wind chill
12
kph wind from W

West Yellowstone weather for Thursday 20th August 2026

Expect broken clouds in West Yellowstone, Montana with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.

29
°C maximum temperature
7
°C minimum temperature
broken clouds
8
hours of sunshine
8
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 sunshine and showers in West Yellowstone, Montana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0-2 mm of rainfall expected with 16% chance of some rain and little or no wind of 6 kph from the north-east.

30
°C maximum temperature
9
°C minimum temperature
sunshine and showers
11
hours of sunshine
9
UV index (Very High)
16
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
6
kph wind from NE

West Yellowstone weather for Saturday 22nd August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 25°C, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 43% chance of some rain and a light breeze of 11 kph from the south-west.

25
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
43
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
11
kph wind from SW

West Yellowstone weather for Sunday 23rd August 2026

Expect isolated thunderstorms in West Yellowstone, Montana with a maximum temperature of 24°C, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 37% chance of some rain and a gentle breeze of 16 kph from the south-west.