What to pack for Yellowstone
Twelve lists, one per month, each built from ten years of weather for Yellowstone rather than from a season. Pick the month you are going.
January
21°F, 12 rain days
February
21°F, 14 rain days
March
30°F, 14 rain days
April
37°F, 14 rain days
May
46°F, 12 rain days
June
59°F, 10 rain days
July
72°F, 8 rain days
August
68°F, 9 rain days
September
61°F, 9 rain days
October
43°F, 12 rain days
November
32°F, 12 rain days
December
21°F, 13 rain days