Weather World
City and County of San Francisco, CA
San Francisco County Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 57°F Lo 47°F | Hi 57°F Lo 48°F | Hi 58°F Lo 49°F | Hi 60°F Lo 50°F | Hi 62°F Lo 52°F | Hi 65°F Lo 54°F | Hi 66°F Lo 56°F | Hi 68°F Lo 57°F | Hi 69°F Lo 58°F | Hi 67°F Lo 56°F | Hi 61°F Lo 51°F | Hi 56°F Lo 48°F |
| 7 mph | 7 mph | 8 mph | 8 mph | 9 mph | 8 mph | 8 mph | 7 mph | 7 mph | 6 mph | 6 mph | 7 mph |
| 4.1 in | 4.4 in | 4 in | 1.2 in | 0.6 in | 0.2 in | 0 in | 0 in | 0.2 in | 1.3 in | 2.5 in | 5 in |
| 73% | 74% | 76% | 76% | 77% | 77% | 79% | 80% | 76% | 72% | 70% | 73% |
| 38% | 38% | 41% | 31% | 29% | 23% | 24% | 24% | 22% | 25% | 30% | 42% |
| 30.1 in | 30.1 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in | 30.1 in | 30.1 in |
| 25 | 23 | 24 | 27 | 29 | 29 | 31 | 31 | 29 | 29 | 26 | 24 |
| 6 | 5 | 7 | 3 | 2 | 1 | 0 | 0 | 1 | 2 | 4 | 7 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 1 | 1 | 1 | 1 | 0 | 2 | 3 | 2 | 2 | 3 |
| 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 3 |
| 210 | 194 | 191 | 241 | 257 | 279 | 293 | 293 | 283 | 269 | 239 | 190 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 14°C Lo 8°C | Hi 14°C Lo 9°C | Hi 14°C Lo 9°C | Hi 15°C Lo 10°C | Hi 16°C Lo 11°C | Hi 18°C Lo 12°C | Hi 19°C Lo 13°C | Hi 20°C Lo 14°C | Hi 20°C Lo 14°C | Hi 19°C Lo 13°C | Hi 16°C Lo 11°C | Hi 13°C Lo 9°C |
| 11 km/h | 12 km/h | 13 km/h | 13 km/h | 14 km/h | 13 km/h | 12 km/h | 12 km/h | 11 km/h | 10 km/h | 10 km/h | 11 km/h |
| 105 mm | 112 mm | 102 mm | 30 mm | 15 mm | 5 mm | 1 mm | 0 mm | 6 mm | 34 mm | 63 mm | 126 mm |
| 73% | 74% | 76% | 76% | 77% | 77% | 79% | 80% | 76% | 72% | 70% | 73% |
| 38% | 38% | 41% | 31% | 29% | 23% | 24% | 24% | 22% | 25% | 30% | 42% |
| 1020 mb | 1019 mb | 1018 mb | 1017 mb | 1015 mb | 1013 mb | 1014 mb | 1013 mb | 1013 mb | 1016 mb | 1018 mb | 1019 mb |
| 25 | 23 | 24 | 27 | 29 | 29 | 31 | 31 | 29 | 29 | 26 | 24 |
| 6 | 5 | 7 | 3 | 2 | 1 | 0 | 0 | 1 | 2 | 4 | 7 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | 2 | 1 | 1 | 1 | 1 | 0 | 2 | 3 | 2 | 2 | 3 |
| 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 3 |
| 210 | 194 | 191 | 241 | 257 | 279 | 293 | 293 | 283 | 269 | 239 | 190 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.