Weather World
Farallon Island Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 57°F Lo 45°F | Hi 57°F Lo 46°F | Hi 58°F Lo 47°F | Hi 61°F Lo 49°F | Hi 63°F Lo 51°F | Hi 67°F Lo 54°F | Hi 68°F Lo 55°F | Hi 70°F Lo 56°F | Hi 71°F Lo 57°F | Hi 68°F Lo 55°F | Hi 62°F Lo 49°F | Hi 56°F Lo 46°F |
| 6 mph | 7 mph | 7 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 6 mph | 6 mph | 6 mph | 6 mph |
| 5 in | 5.4 in | 4.9 in | 1.3 in | 0.7 in | 0.2 in | 0 in | 0 in | 0.2 in | 1.6 in | 3.4 in | 5.9 in |
| 74% | 75% | 77% | 75% | 76% | 75% | 77% | 78% | 74% | 70% | 70% | 74% |
| 38% | 38% | 41% | 31% | 28% | 22% | 22% | 23% | 21% | 24% | 31% | 43% |
| 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 | 28 | 26 | 24 |
| 6 | 6 | 7 | 3 | 2 | 1 | 0 | 0 | 1 | 3 | 4 | 7 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 3 | 3 | 3 | 4 | 4 | 5 | 4 | 5 | 5 | 4 | 3 | 3 |
| 211 | 192 | 190 | 236 | 267 | 290 | 304 | 302 | 286 | 272 | 239 | 191 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 14°C Lo 8°C | Hi 14°C Lo 8°C | Hi 14°C Lo 8°C | Hi 16°C Lo 9°C | Hi 17°C Lo 10°C | Hi 20°C Lo 12°C | Hi 20°C Lo 13°C | Hi 21°C Lo 14°C | Hi 22°C Lo 14°C | Hi 20°C Lo 13°C | Hi 16°C Lo 10°C | Hi 13°C Lo 8°C |
| 10 km/h | 11 km/h | 12 km/h | 12 km/h | 13 km/h | 12 km/h | 11 km/h | 10 km/h | 10 km/h | 9 km/h | 9 km/h | 10 km/h |
| 127 mm | 136 mm | 124 mm | 32 mm | 17 mm | 5 mm | 1 mm | 0 mm | 6 mm | 41 mm | 85 mm | 150 mm |
| 74% | 75% | 77% | 75% | 76% | 75% | 77% | 78% | 74% | 70% | 70% | 74% |
| 38% | 38% | 41% | 31% | 28% | 22% | 22% | 23% | 21% | 24% | 31% | 43% |
| 1020 mb | 1019 mb | 1018 mb | 1017 mb | 1015 mb | 1013 mb | 1014 mb | 1013 mb | 1013 mb | 1015 mb | 1018 mb | 1019 mb |
| 25 | 23 | 24 | 27 | 29 | 29 | 31 | 31 | 29 | 28 | 26 | 24 |
| 6 | 6 | 7 | 3 | 2 | 1 | 0 | 0 | 1 | 3 | 4 | 7 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 3 | 3 | 3 | 4 | 4 | 5 | 4 | 5 | 5 | 4 | 3 | 3 |
| 211 | 192 | 190 | 236 | 267 | 290 | 304 | 302 | 286 | 272 | 239 | 191 |
| 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.