San Francisco International Airport Weather Forecast
- 61
- 79
Increasing Clouds
- 62
- 74
Chance Rain Showers
- 61
- 76
Chance Rain Showers
- 60
- 75
Mostly Sunny
- 61
- 77
Mostly Sunny
- 63
- 82
Partly Sunny
- 62
- 76
Chance Rain Showers
Today 17 Sep San Francisco Bay Shoreline
Sunny. Highs in the 70s to upper 80s. Northwest Winds 5 to 15 Mph.
Tonight 17 Sep San Francisco Bay Shoreline
Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 60s. West Winds 10 to 15 Mph decreasing to around 5 Mph after midnight.
San Francisco International Airport Temperature Statistics
September Temperature
San Francisco, San Francisco International Airport (0 miles)
Lowest 1 September, 2025
57 °FAverage September
65.5 °FHighest 15 September, 2025
82 °F
Climate (2020–Present)
San Francisco, San Francisco International Airport (0 miles)
Average Low 2020–2025
52.3 °FAverage 2020–2025
58.3 °FAverage High 2020–2025
66.7 °F