West Yellowstone weather by month

Check out West Yellowstone weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & daylight
UV levels & humidity

Temperature in West Yellowstone (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	-6	-2	1	7	13	19	24	23	18	11	1	-5
Min temperature (night-time)	-17	-16	-13	-7	-2	2	5	4	0	-4	-10	-16
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in West Yellowstone

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	5	6	8	8	9	10	11	10	9	7	4	4
Daily hours of daylight	9	10	12	14	15	16	15	14	12	11	10	9
UV Index (Maximum)	1	2	4	6	8	9	10	8	6	4	2	1

Rainfall in West Yellowstone

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	10	9	11	10	11	10	8	8	8	7	9	10
Average monthly rainfall (mm)	62	47	49	42	55	62	42	41	42	37	54	62

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West Yellowstone by month

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

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The climate guide for Montana (West Yellowstone) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in West Yellowstone?

West Yellowstone has a cold climate with cool summers and some rainfall in all months.

West Yellowstone weather in January

Expect daytime maximum temperatures of -6°C in West Yellowstone, Montana in January based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 62 mm of rainfall in the month, which might fall as snow.

-6
-6°C max day temperature
5
5 hours of sunshine per day
10
10 days with some rainfall
-17
-17°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
62
62 mm of monthly rainfall
1
1 (Low) UV index

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West Yellowstone weather in February

Expect daytime maximum temperatures of -2°C in West Yellowstone, Montana in February based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 47 mm of rainfall in the month, which might fall as snow.

-2
-2°C max day temperature
6
6 hours of sunshine per day
9
9 days with some rainfall
-16
-16°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
47
47 mm of monthly rainfall
2
2 (Low) UV index

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West Yellowstone weather in March

Expect daytime maximum temperatures of 1°C in West Yellowstone, Montana in March based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 49 mm of rainfall in the month, which might fall as snow.

1
1°C max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
-13
-13°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
49
49 mm of monthly rainfall
4
4 (Moderate) UV index

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West Yellowstone weather in April

Expect daytime maximum temperatures of 7°C in West Yellowstone, Montana in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 42 mm of rainfall in the month, which might fall as snow.

7
7°C max day temperature
8
8 hours of sunshine per day
10
10 days with some rainfall
-7
-7°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
42
42 mm of monthly rainfall
6
6 (High) UV index

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West Yellowstone weather in May

Expect daytime maximum temperatures of 13°C in West Yellowstone, Montana in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 55 mm of rainfall in the month.

13
13°C max day temperature
9
9 hours of sunshine per day
11
11 days with some rainfall
-2
-2°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
55
55 mm of monthly rainfall
8
8 (Very High) UV index

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West Yellowstone weather in June

Expect daytime maximum temperatures of 19°C in West Yellowstone, Montana in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 10 days with some rainfall and typically 62 mm of rainfall in the month.

19
19°C max day temperature
10
10 hours of sunshine per day
10
10 days with some rainfall
2
2°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
62
62 mm of monthly rainfall
9
9 (Very High) UV index

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West Yellowstone weather in July

Expect daytime maximum temperatures of 24°C in West Yellowstone, Montana in July based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 42 mm of rainfall in the month.

24
24°C max day temperature
11
11 hours of sunshine per day
8
8 days with some rainfall
5
5°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
42
42 mm of monthly rainfall
10
10 (Very High) UV index

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West Yellowstone weather in August

Expect daytime maximum temperatures of 23°C in West Yellowstone, Montana in August based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 41 mm of rainfall in the month.

23
23°C max day temperature
10
10 hours of sunshine per day
8
8 days with some rainfall
4
4°C min night temperature
14
14 hours of daylight per day
0
No heat & humidity
41
41 mm of monthly rainfall
8
8 (Very High) UV index

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West Yellowstone weather in September

Expect daytime maximum temperatures of 18°C in West Yellowstone, Montana in September based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 42 mm of rainfall in the month.

18
18°C max day temperature
9
9 hours of sunshine per day
8
8 days with some rainfall
0
0°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
42
42 mm of monthly rainfall
6
6 (High) UV index

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West Yellowstone weather in October

Expect daytime maximum temperatures of 11°C in West Yellowstone, Montana in October based on long-term weather averages. There are 7 hours of sunshine per day on average.

11
11°C max day temperature
7
7 hours of sunshine per day
7
7 days with some rainfall
-4
-4°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
37
37 mm of monthly rainfall
4
4 (Moderate) UV index

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West Yellowstone weather in November

Expect daytime maximum temperatures of 1°C in West Yellowstone, Montana in November based on long-term weather averages. There are 4 hours of sunshine per day on average with typically 54 mm of rainfall in the month, which might fall as snow.

1
1°C max day temperature
4
4 hours of sunshine per day
9
9 days with some rainfall
-10
-10°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
54
54 mm of monthly rainfall
2
2 (Low) UV index

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West Yellowstone weather in December

Expect daytime maximum temperatures of -5°C in West Yellowstone, Montana in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 62 mm of rainfall in the month, which might fall as snow.

-5
-5°C max day temperature
4
4 hours of sunshine per day
10
10 days with some rainfall
-16
-16°C min night temperature
9
9 hours of daylight per day
0
No heat & humidity
62
62 mm of monthly rainfall
1
1 (Low) UV index

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