Indianapolis vs Mammoth Cave National Park: which is better, month by month

Mammoth Cave National Park beats Indianapolis in 6 of 12 months — its lead peaks in January (66 vs 41) — while Indianapolis 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.

Indianapolis

🇺🇸 United States · mild climate

Best month
September 89/100
Months won
5 of 12

Mammoth Cave National Park

🇺🇸 United States · mild climate

Best month
April 87/100
Months won
6 of 12

Indianapolis vs Mammoth Cave National Park — all 12 months

MonthIndianapolisMammoth Cave National ParkWinnerGap
January41Ffreezing, a little rain, clean air66Ccold, rainy, clean airMammoth Cave National Park25
February54Dcold, a little rain, clean air70Bcool, soaked, clean airMammoth Cave National Park16
March63Ccold, rainy, clean air81Anice, rainy, clean airMammoth Cave National Park18
April74Bnice, rainy, clean air87Anice, rainy, clean airMammoth Cave National Park13
May88Anice, rainy, clean air77Bwarm, rainy, clean airIndianapolis11
June79Bhot, rainy62Csweltering, rainyIndianapolis17
July69Chot, rainy50Dsweltering, soakedIndianapolis19
August78Bhot, rainy59Dsweltering, rainyIndianapolis19
September89Awarm, a little rain, clean air75Bhot, rainy, clean airIndianapolis14
October82Anice, a little rain, clean air85Awarm, rainy, clean airTie3
November64Ccold, a little rain, clean air82Acool, rainy, clean airMammoth Cave National Park18
December49Fcold, a little rain, clean air70Bcold, rainy, clean airMammoth Cave National Park21

A month is a tie when the two are within 3 points. The widest gap is January (41 vs 66). Tap a month for that month's temperature, rain, humidity and air quality side by side.