SeasonMapDetroit vs Philadelphia: which is better, month by month
Philadelphia beats Detroit in 8 of 12 months — its lead peaks in January (53 vs 39) — while Detroit wins June to September.
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.
Detroit vs Philadelphia — all 12 months
| Month | Detroit | Philadelphia | Winner | Gap |
|---|---|---|---|---|
| January | 39Ffreezing, a little rain, clean air | 53Dcold, rainy, clean air | Philadelphia | 14 |
| February | 49Ffreezing, a little rain, clean air | 60Ccold, rainy | Philadelphia | 11 |
| March | 62Ccold, rainy, clean air | 69Ccool, rainy, clean air | Philadelphia | 7 |
| April | 72Bcool, rainy, clean air | 82Anice, rainy, clean air | Philadelphia | 10 |
| May | 87Anice, rainy | 91Swarm, rainy | Philadelphia | 4 |
| June | 84Awarm, rainy | 79Bhot, rainy | Detroit | 5 |
| July | 74Bhot, rainy | 65Csweltering, rainy | Detroit | 9 |
| August | 78Bhot, rainy | 72Bhot, rainy | Detroit | 6 |
| September | 90Swarm, rainy, clean air | 81Awarm, rainy, clean air | Detroit | 9 |
| October | 77Bcool, a little rain, clean air | 85Anice, a little rain, clean air | Philadelphia | 8 |
| November | 60Ccold, a little rain, clean air | 71Bcool, a little rain, clean air | Philadelphia | 11 |
| December | 46Fcold, a little rain, clean air | 56Dcold, rainy, clean air | Philadelphia | 10 |
A month is a tie when the two are within 3 points. The widest gap is January (39 vs 53). Tap a month for that month's temperature, rain, humidity and air quality side by side.