Climate & Weather in San Francisco, 🇺🇸 United States - Monthly Averages, Forecast & Air Quality
🇺🇸 San Francisco,
United States
#45
Nomad Score
6.4
Coords
37.7792588, -122.4193286
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CURRENT CONDITIONS
Temperature
19.9°C
/
14.0°C
Feels Like
18.3°C / 11.3°C
Weather
🌤️ Overcast
Humidity
%
Wind
31.5 km/h
(gusts 39.2)
UV Index
6.8
Sunrise / Sunset
06:50
/
19:20
Daylight
12.5 hrs
7-DAY FORECAST
| Date | Weather | High | Low | Rain % |
|---|---|---|---|---|
| Sun 13 Sep | 🌤️ Overcast | 19.9° | 14.0° | 1% |
| Mon 14 Sep | 🌤️ Overcast | 22.7° | 15.4° | 0% |
| Tue 15 Sep | 🌤️ Overcast | 19.8° | 14.7° | 1% |
| Wed 16 Sep | 🌤️ Partly cloudy | 20.4° | 13.8° | 2% |
| Thu 17 Sep | ☀️ Clear sky | 20.8° | 14.7° | 0% |
BEST MONTHS TO VISIT
| Month | Rating | Avg High | Avg Low | Rain Days |
|---|---|---|---|---|
| September | Excellent | 20.4°C | 14.4°C | 1.2 |
| August | Excellent | 19.9°C | 14.1°C | 0.2 |
| October | Excellent | 20.3°C | 12.9°C | 3.1 |
| June | Good | 18.3°C | 12.4°C | 0.2 |
| July | Good | 18.2°C | 13.0°C | 0.0 |
| May | Good | 17.5°C | 11.0°C | 1.7 |
| April | Good | 15.6°C | 9.5°C | 3.0 |
| November | Fair | 16.3°C | 10.0°C | 7.0 |
| March | Fair | 14.2°C | 8.6°C | 10.3 |
| January | Poor | 13.9°C | 7.8°C | 8.1 |
| February | Poor | 14.4°C | 7.7°C | 8.9 |
| December | Poor | 13.4°C | 8.2°C | 12.4 |
TEMPERATURE BY MONTH
PRECIPITATION & RAIN DAYS
SUNSHINE, UV & HUMIDITY
AIR QUALITY
55
🟡 Moderate
US Air Quality Index
European AQI: 33
PM2.5
11.3 µg/m³
PM10
17.1 µg/m³
Ozone
75.0 µg/m³
NO₂
2.5 µg/m³
SO₂
0.9 µg/m³
CO
135.0 µg/m³
UV Index
7.3
Dust
0.0 µg/m³
MONTHLY CLIMATE DATA
| Month | High | Low | Mean | Feels Hi | Feels Lo | Precip | Rain Days | Snow | Sun | Daylight | UV | Humidity | Wind | Clouds |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 13.9° | 7.8° | 10.5° | 11.6° | 4.9° | 100.4 mm | 8.1 | 0.0 cm | 223.2 hrs | 9.9 hrs | - | 79.5% | 22.0 km/h | 56.5% |
| Feb | 14.4° | 7.7° | 10.7° | 11.9° | 4.8° | 94.6 mm | 8.9 | 0.0 cm | 232.4 hrs | 10.8 hrs | - | 79.0% | 24.1 km/h | 49.0% |
| Mar | 14.2° | 8.6° | 11.2° | 11.8° | 5.4° | 100.4 mm | 10.3 | 0.0 cm | 294.5 hrs | 12.0 hrs | - | 77.6% | 27.7 km/h | 51.4% |
| Apr | 15.6° | 9.5° | 12.2° | 13.6° | 6.6° | 21.8 mm | 3.0 | 0.0 cm | 351.0 hrs | 13.2 hrs | - | 77.4% | 28.3 km/h | 42.6% |
| May | 17.5° | 11.0° | 13.8° | 15.2° | 8.1° | 11.7 mm | 1.7 | 0.0 cm | 399.9 hrs | 14.2 hrs | - | 74.6% | 30.2 km/h | 34.3% |
| Jun | 18.3° | 12.4° | 14.9° | 16.2° | 9.8° | 2.0 mm | 0.2 | 0.0 cm | 390.0 hrs | 14.7 hrs | - | 77.1% | 30.5 km/h | 42.4% |
| Jul | 18.2° | 13.0° | 15.2° | 16.7° | 10.8° | 0.3 mm | 0.0 | 0.0 cm | 384.4 hrs | 14.5 hrs | - | 81.5% | 28.3 km/h | 54.4% |
| Aug | 19.9° | 14.1° | 16.5° | 18.6° | 12.5° | 0.7 mm | 0.2 | 0.0 cm | 375.1 hrs | 13.6 hrs | - | 81.0% | 27.5 km/h | 50.4% |
| Sep | 20.4° | 14.4° | 16.8° | 19.3° | 13.3° | 5.4 mm | 1.2 | 0.0 cm | 330.0 hrs | 12.4 hrs | - | 80.2% | 25.2 km/h | 43.2% |
| Oct | 20.3° | 12.9° | 16.0° | 18.6° | 11.5° | 41.5 mm | 3.1 | 0.0 cm | 291.4 hrs | 11.2 hrs | - | 75.5% | 22.8 km/h | 43.5% |
| Nov | 16.3° | 10.0° | 12.8° | 14.4° | 7.8° | 77.6 mm | 7.0 | 0.0 cm | 246.0 hrs | 10.1 hrs | - | 78.5% | 19.3 km/h | 53.9% |
| Dec | 13.4° | 8.2° | 10.5° | 11.4° | 5.6° | 185.0 mm | 12.4 | 0.0 cm | 189.1 hrs | 9.6 hrs | - | 84.9% | 20.0 km/h | 68.0% |