SeasonMapSan Francisco vs St. Louis: which is better, month by month
San Francisco beats St. Louis in 11 of 12 months — its lead peaks in July (93 vs 66) — and they are within 3 points in 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.
San Francisco vs St. Louis — all 12 months
| Month | San Francisco | St. Louis | Winner | Gap |
|---|---|---|---|---|
| January | 68Ccool, rainy, clean air | 50Dcold, a little rain, clean air | San Francisco | 18 |
| February | 75Bcool, rainy, muggy air | 62Ccold, a little rain, clean air | San Francisco | 13 |
| March | 76Bcool, rainy, clean air | 69Ccool, rainy, clean air | San Francisco | 7 |
| April | 85Anice, a little rain, clean air | 80Anice, rainy, clean air | San Francisco | 5 |
| May | 88Anice, dry, clean air | 87Awarm, rainy | Tie | 1 |
| June | 92Snice, dry, clean air | 76Bsweltering, rainy | San Francisco | 16 |
| July | 93Snice, dry, clean air | 66Csweltering, rainy | San Francisco | 27 |
| August | 95Snice, dry, clean air | 73Bsweltering, rainy | San Francisco | 22 |
| September | 96Snice, dry, clean air | 85Ahot, rainy, clean air | San Francisco | 11 |
| October | 90Snice, dry, clean air | 84Anice, a little rain, clean air | San Francisco | 6 |
| November | 80Anice, a little rain, clean air | 68Ccool, a little rain, clean air | San Francisco | 12 |
| December | 67Ccool, rainy, clean air | 59Dcold, a little rain, clean air | San Francisco | 8 |
A month is a tie when the two are within 3 points. The widest gap is July (93 vs 66). Tap a month for that month's temperature, rain, humidity and air quality side by side.