SeasonMapPhiladelphia vs San Francisco: which is better, month by month
San Francisco beats Philadelphia in 10 of 12 months — its lead peaks in July (93 vs 65) — and they are within 3 points in April to May.
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.
Philadelphia vs San Francisco — all 12 months
| Month | Philadelphia | San Francisco | Winner | Gap |
|---|---|---|---|---|
| January | 53Dcold, rainy, clean air | 68Ccool, rainy, clean air | San Francisco | 15 |
| February | 60Ccold, rainy | 75Bcool, rainy, muggy air | San Francisco | 15 |
| March | 69Ccool, rainy, clean air | 76Bcool, rainy, clean air | San Francisco | 7 |
| April | 82Anice, rainy, clean air | 85Anice, a little rain, clean air | Tie | 3 |
| May | 91Swarm, rainy | 88Anice, dry, clean air | Tie | 3 |
| June | 79Bhot, rainy | 92Snice, dry, clean air | San Francisco | 13 |
| July | 65Csweltering, rainy | 93Snice, dry, clean air | San Francisco | 28 |
| August | 72Bhot, rainy | 95Snice, dry, clean air | San Francisco | 23 |
| September | 81Awarm, rainy, clean air | 96Snice, dry, clean air | San Francisco | 15 |
| October | 85Anice, a little rain, clean air | 90Snice, dry, clean air | San Francisco | 5 |
| November | 71Bcool, a little rain, clean air | 80Anice, a little rain, clean air | San Francisco | 9 |
| December | 56Dcold, rainy, clean air | 67Ccool, rainy, clean air | San Francisco | 11 |
A month is a tie when the two are within 3 points. The widest gap is July (65 vs 93). Tap a month for that month's temperature, rain, humidity and air quality side by side.