SeasonMapIndianapolis vs Philadelphia: which is better, month by month
Philadelphia beats Indianapolis in 6 of 12 months — its lead peaks in January (53 vs 41) — while Indianapolis wins July to September; they are within 3 points in May, June and October.
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.
Indianapolis vs Philadelphia — all 12 months
| Month | Indianapolis | Philadelphia | Winner | Gap |
|---|---|---|---|---|
| January | 41Ffreezing, a little rain, clean air | 53Dcold, rainy, clean air | Philadelphia | 12 |
| February | 54Dcold, a little rain, clean air | 60Ccold, rainy | Philadelphia | 6 |
| March | 63Ccold, rainy, clean air | 69Ccool, rainy, clean air | Philadelphia | 6 |
| April | 74Bnice, rainy, clean air | 82Anice, rainy, clean air | Philadelphia | 8 |
| May | 88Anice, rainy, clean air | 91Swarm, rainy | Tie | 3 |
| June | 79Bhot, rainy | 79Bhot, rainy | Tie | 0 |
| July | 69Chot, rainy | 65Csweltering, rainy | Indianapolis | 4 |
| August | 78Bhot, rainy | 72Bhot, rainy | Indianapolis | 6 |
| September | 89Awarm, a little rain, clean air | 81Awarm, rainy, clean air | Indianapolis | 8 |
| October | 82Anice, a little rain, clean air | 85Anice, a little rain, clean air | Tie | 3 |
| November | 64Ccold, a little rain, clean air | 71Bcool, a little rain, clean air | Philadelphia | 7 |
| December | 49Fcold, a little rain, clean air | 56Dcold, rainy, clean air | Philadelphia | 7 |
A month is a tie when the two are within 3 points. The widest gap is January (41 vs 53). Tap a month for that month's temperature, rain, humidity and air quality side by side.