Chicago vs Gateway Arch National Park: which is better, month by month

Gateway Arch National Park beats Chicago in 7 of 12 months — its lead peaks in January (65 vs 40) — while Chicago wins May to September.

Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Chicago

🇺🇸 United States · mild climate

Best month
September 91/100
Months won
5 of 12

Gateway Arch National Park

🇺🇸 United States · mild climate

Best month
April 87/100
Months won
7 of 12

Chicago vs Gateway Arch National Park — all 12 months

MonthChicagoGateway Arch National ParkWinnerGap
January40Ffreezing, a little rain, clean air65Ccold, a little rain, clean airGateway Arch National Park25
February49Ffreezing, a little rain, clean air73Bcold, a little rain, clean airGateway Arch National Park24
March64Ccold, a little rain, clean air77Bcool, rainy, clean airGateway Arch National Park13
April71Bcool, rainy, clean air87Anice, rainy, clean airGateway Arch National Park16
May83Anice, rainy, muggy air79Bwarm, rainyChicago4
June86Awarm, rainy66Csweltering, rainyChicago20
July76Bhot, rainy, muggy air57Dsweltering, rainyChicago19
August81Ahot, a little rain66Csweltering, rainyChicago15
September91Swarm, a little rain, clean air81Ahot, rainy, clean airChicago10
October73Bnice, rainy, clean air87Anice, a little rain, clean airGateway Arch National Park14
November62Ccold, a little rain, clean air78Bcool, a little rain, clean airGateway Arch National Park16
December46Fcold, a little rain, clean air71Bcold, a little rain, clean airGateway Arch National Park25

A month is a tie when the two are within 3 points. The widest gap is January (40 vs 65). Tap a month for that month's temperature, rain, humidity and air quality side by side.