West Yellowstone weather by month & the best time to visit
United States · alpine / mountain town · continental climate
The best time to visit West Yellowstone is July — its sunniest month (Sunshine Score 88/100), with August and September close behind. West Yellowstone averages about 2,635 hours of sunshine a year. Daytime highs around 26°C / 79°F and roughly 36 mm of rain in July.
When is the best time to visit West Yellowstone?
For sunshine, the best time to visit West Yellowstone is July, then August and September. The dullest month is January (0/100, 76 mm of rain). The full month-by-month picture is in the table below.
How sunny is West Yellowstone?
West Yellowstone gets a lot of sun: around 2,635 hours a year. 88 Sunshine Score points separate July (88) from January (0), so the month you pick matters. It ranks #161 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 778 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -5° / 23°F | -16° / 3°F | 76 mm | 1 |
| February | 0 | -4° / 25°F | -15° / 5°F | 68 mm | 2 |
| March | 0 | 0° / 32°F | -10° / 14°F | 71 mm | 3 |
| April | 0 | 6° / 43°F | -5° / 23°F | 77 mm | 5 |
| May | 33 | 13° / 55°F | 1° / 34°F | 77 mm | 7 |
| June | 75 | 19° / 66°F | 5° / 41°F | 68 mm | 8 |
| July | 88 | 26° / 79°F | 10° / 50°F | 36 mm | 9 |
| August | 88 | 25° / 77°F | 9° / 48°F | 37 mm | 8 |
| September | 79 | 19° / 66°F | 4° / 39°F | 48 mm | 6 |
| October | 7 | 9° / 48°F | -3° / 27°F | 63 mm | 3 |
| November | 0 | 1° / 34°F | -10° / 14°F | 71 mm | 1 |
| December | 0 | -5° / 23°F | -16° / 3°F | 86 mm | 1 |
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West Yellowstone: questions and answers
What kind of destination is West Yellowstone?
West Yellowstone is a alpine / mountain town in United States at 2,022 m elevation with a continental climate.
How many hours of sunshine does West Yellowstone get a year?
West Yellowstone gets about 2,635 hours of sunshine a year, at its best around July.
When is the best time to visit West Yellowstone?
The sunniest time to visit West Yellowstone is July, when the Sunshine Score peaks at 88/100 (with August and September close behind). Expect daytime highs around 26°C / 79°F.
What is the least sunny month in West Yellowstone?
January is the least sunny month in West Yellowstone, scoring 0/100 with about 76 mm of rain.
How strong is the sun in West Yellowstone?
The typical midday UV index in West Yellowstone peaks around 9 (very high) in July, easing to about 1 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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