Jasper vs Yellowstone National Park: which is better, month by month

Jasper beats Yellowstone National Park in 6 of 12 months — its lead peaks in May (87 vs 78) — while Yellowstone National Park wins July; they are within 3 points in the other 5 months.

Each place is scored under the lens that suits its type. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Jasper

🇨🇦 Canada · continental climate

Best month: June 93/100
Months won: 6 of 12

Yellowstone National Park

🇺🇸 United States · continental climate

Best month: August 92/100
Months won: 1 of 12

Jasper vs Yellowstone National Park — all 12 months

Month	Jasper	Yellowstone National Park	Winner	Gap
January	47Ffreezing, dry, clean air	45Ffreezing, a little rain, clean air	Tie	2
February	51Dfreezing, dry, clean air	47Ffreezing, a little rain, clean air	Jasper	4
March	69Ccold, a little rain, clean air	62Cfreezing, a little rain, muggy air	Jasper	7
April	79Bcold, a little rain, clean air	71Bcold, a little rain, reliable snow	Jasper	8
May	87Acool, a little rain, clean air	78Bcold, a little rain, reliable snow	Jasper	9
June	93Snice, a little rain, clean air	86Acool, a little rain	Jasper	7
July	85Awarm, a little rain	90Snice, dry	Yellowstone National Park	5
August	89Anice, a little rain, clean air	92Snice, a little rain, clean air	Tie	3
September	90Snice, a little rain, clean air	84Acool, a little rain, clean air	Jasper	6
October	73Bcold, a little rain, clean air	70Bcold, a little rain, clean air	Tie	3
November	57Dfreezing, a little rain, clean air	55Dfreezing, a little rain, clean air	Tie	2
December	42Ffreezing, a little rain, clean air	42Ffreezing, a little rain, clean air	Tie	0

A month is a tie when the two are within 3 points. The widest gap is May (87 vs 78). Tap a month for that month's temperature, rain, humidity and air quality side by side.