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 (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	21	28	34	45	55	66	75	73	64	52	34	23
Min temperature (night-time)	1	3	9	19	28	36	41	39	32	25	14	3
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 (inches)	2.4	1.9	1.9	1.7	2.2	2.4	1.7	1.6	1.7	1.5	2.1	2.4

More about West Yellowstone

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 21°F 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 2.4 inches of rainfall in the month, which might fall as snow.

21
21°F max day temperature
5
5 hours of sunshine per day
10
10 days with some rainfall
1
1°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
2.4
2.4 inches of monthly rainfall
1
1 (Low) UV index

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West Yellowstone weather in February

Expect daytime maximum temperatures of 28°F in West Yellowstone, Montana in February based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 1.9 inches of rainfall in the month, which might fall as snow.

28
28°F max day temperature
6
6 hours of sunshine per day
9
9 days with some rainfall
3
3°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
1.9
1.9 inches of monthly rainfall
2
2 (Low) UV index

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West Yellowstone weather in March

Expect daytime maximum temperatures of 34°F 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 1.9 inches of rainfall in the month, which might fall as snow.

34
34°F max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
9
9°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
1.9
1.9 inches of monthly rainfall
4
4 (Moderate) UV index

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West Yellowstone weather in April

Expect daytime maximum temperatures of 45°F 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 1.7 inches of rainfall in the month, which might fall as snow.

45
45°F max day temperature
8
8 hours of sunshine per day
10
10 days with some rainfall
19
19°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
1.7
1.7 inches of monthly rainfall
6
6 (High) UV index

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West Yellowstone weather in May

Expect daytime maximum temperatures of 55°F 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 2.2 inches of rainfall in the month.

55
55°F max day temperature
9
9 hours of sunshine per day
11
11 days with some rainfall
28
28°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
2.2
2.2 inches of monthly rainfall
8
8 (Very High) UV index

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West Yellowstone weather in June

Expect daytime maximum temperatures of 66°F 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 2.4 inches of rainfall in the month.

66
66°F max day temperature
10
10 hours of sunshine per day
10
10 days with some rainfall
36
36°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
2.4
2.4 inches of monthly rainfall
9
9 (Very High) UV index

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West Yellowstone weather in July

Expect daytime maximum temperatures of 75°F in West Yellowstone, Montana in July based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 1.7 inches of rainfall in the month.

75
75°F max day temperature
11
11 hours of sunshine per day
8
8 days with some rainfall
41
41°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
1.7
1.7 inches of monthly rainfall
10
10 (Very High) UV index

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West Yellowstone weather in August

Expect daytime maximum temperatures of 73°F in West Yellowstone, Montana in August based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 1.6 inches of rainfall in the month.

73
73°F max day temperature
10
10 hours of sunshine per day
8
8 days with some rainfall
39
39°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
1.6
1.6 inches of monthly rainfall
8
8 (Very High) UV index

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West Yellowstone weather in September

Expect daytime maximum temperatures of 64°F in West Yellowstone, Montana in September based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 1.7 inches of rainfall in the month.

64
64°F max day temperature
9
9 hours of sunshine per day
8
8 days with some rainfall
32
32°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
1.7
1.7 inches of monthly rainfall
6
6 (High) UV index

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West Yellowstone weather in October

Expect daytime maximum temperatures of 52°F in West Yellowstone, Montana in October based on long-term weather averages. There are 7 hours of sunshine per day on average.

52
52°F max day temperature
7
7 hours of sunshine per day
7
7 days with some rainfall
25
25°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
1.5
1.5 inches of monthly rainfall
4
4 (Moderate) UV index

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West Yellowstone weather in November

Expect daytime maximum temperatures of 34°F in West Yellowstone, Montana in November based on long-term weather averages. There are 4 hours of sunshine per day on average with typically 2.1 inches of rainfall in the month, which might fall as snow.

34
34°F max day temperature
4
4 hours of sunshine per day
9
9 days with some rainfall
14
14°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
2.1
2.1 inches of monthly rainfall
2
2 (Low) UV index

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West Yellowstone weather in December

Expect daytime maximum temperatures of 23°F 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 2.4 inches of rainfall in the month, which might fall as snow.

23
23°F max day temperature
4
4 hours of sunshine per day
10
10 days with some rainfall
3
3°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
2.4
2.4 inches of monthly rainfall
1
1 (Low) UV index

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