Gateway Arch National Park vs St. Louis: which is better, month by month

Gateway Arch National Park beats St. Louis in 6 of 12 months — its lead peaks in January (65 vs 50) — while St. Louis wins May to September; they are within 3 points in October.

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.

Gateway Arch National Park

🇺🇸 United States · mild climate

Best month
April 87/100
Months won
6 of 12

St. Louis

🇺🇸 United States · mild climate

Best month
May 87/100
Months won
5 of 12

Gateway Arch National Park vs St. Louis — all 12 months

MonthGateway Arch National ParkSt. LouisWinnerGap
January65Ccold, a little rain, clean air50Dcold, a little rain, clean airGateway Arch National Park15
February73Bcold, a little rain, clean air62Ccold, a little rain, clean airGateway Arch National Park11
March77Bcool, rainy, clean air69Ccool, rainy, clean airGateway Arch National Park8
April87Anice, rainy, clean air80Anice, rainy, clean airGateway Arch National Park7
May79Bwarm, rainy87Awarm, rainySt. Louis8
June66Csweltering, rainy76Bsweltering, rainySt. Louis10
July57Dsweltering, rainy66Csweltering, rainySt. Louis9
August66Csweltering, rainy73Bsweltering, rainySt. Louis7
September81Ahot, rainy, clean air85Ahot, rainy, clean airSt. Louis4
October87Anice, a little rain, clean air84Anice, a little rain, clean airTie3
November78Bcool, a little rain, clean air68Ccool, a little rain, clean airGateway Arch National Park10
December71Bcold, a little rain, clean air59Dcold, a little rain, clean airGateway Arch National Park12

A month is a tie when the two are within 3 points. The widest gap is January (65 vs 50). Tap a month for that month's temperature, rain, humidity and air quality side by side.