SeasonMapNapa vs Philadelphia: which is better, month by month
Napa beats Philadelphia in 11 of 12 months — its lead peaks in July (92 vs 65) — and they are within 3 points in 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.
Napa vs Philadelphia — all 12 months
| Month | Napa | Philadelphia | Winner | Gap |
|---|---|---|---|---|
| January | 64Ccool, soaked, clean air | 53Dcold, rainy, clean air | Napa | 11 |
| February | 73Bcool, rainy, clean air | 60Ccold, rainy | Napa | 13 |
| March | 77Bnice, rainy, clean air | 69Ccool, rainy, clean air | Napa | 8 |
| April | 93Snice, dry, clean air | 82Anice, rainy, clean air | Napa | 11 |
| May | 95Swarm, dry, clean air | 91Swarm, rainy | Napa | 4 |
| June | 91Swarm, dry, clean air | 79Bhot, rainy | Napa | 12 |
| July | 92Shot, dry, clean air | 65Csweltering, rainy | Napa | 27 |
| August | 90Shot, dry, clean air | 72Bhot, rainy | Napa | 18 |
| September | 88Ahot, dry, clean air | 81Awarm, rainy, clean air | Napa | 7 |
| October | 86Awarm, a little rain, clean air | 85Anice, a little rain, clean air | Tie | 1 |
| November | 76Bnice, a little rain, clean air | 71Bcool, a little rain, clean air | Napa | 5 |
| December | 63Ccool, rainy, clean air | 56Dcold, rainy, clean air | Napa | 7 |
A month is a tie when the two are within 3 points. The widest gap is July (92 vs 65). Tap a month for that month's temperature, rain, humidity and air quality side by side.