South San Francisco, CA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in South San Francisco now
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South San Francisco weather by the hour
South San Francisco weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of South San Francisco.
This week in South San Francisco
Sunrise, sunset and moon in South San Francisco
What is the weather usually like in South San Francisco?
Köppen climate classification, calculated from the 1991–2020 normals
- Septemberwarmest month · 75°F average high
- Januarycoldest month · 44°F average low
- 19.6 inprecipitation per year · 499 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit South San Francisco: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SAN FRANCISCO INTL AP, CA US (USW00023234), adjusted for the elevation of South San Francisco.
South San Francisco weather month by month
Sunrise and sunset in South San Francisco through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:21 AM | 5:16 PM | 9 h 54 min |
| February | 6:57 AM | 5:50 PM | 10 h 53 min |
| March | 7:18 AM | 7:18 PM | 11 h 59 min |
| April | 6:32 AM | 7:46 PM | 13 h 13 min |
| May | 5:58 AM | 8:13 PM | 14 h 15 min |
| June | 5:45 AM | 8:34 PM | 14 h 48 min |
| July | 5:58 AM | 8:32 PM | 14 h 33 min |
| August | 6:24 AM | 8:03 PM | 13 h 39 min |
| September | 6:50 AM | 7:18 PM | 12 h 28 min |
| October | 7:16 AM | 6:33 PM | 11 h 16 min |
| November | 6:48 AM | 4:59 PM | 10 h 11 min |
| December | 7:15 AM | 4:53 PM | 9 h 37 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in South San Francisco?
South San Francisco has a warm-summer mediterranean climate. The warmest month is September, with an average high of 75°F (24°C), and the coldest is January, with average lows of 44°F (7°C).
It gets about 19.6 inches (499 mm) of precipitation a year. The wettest month is December and the driest is July.
The best time to visit South San Francisco is June to September. At 16 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about South San Francisco
Weather in towns near South San Francisco
Questions about the weather in South San Francisco
What is the hottest month in South San Francisco?
September, with an average high of 75°F (24°C).
What is the coldest month in South San Francisco?
January, with an average low of 44°F (7°C).
How much does it rain in South San Francisco?
About 19.6 inches (499 mm) a year; the wettest month is December.
Does it snow in South San Francisco?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit South San Francisco?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does South San Francisco have?
Warm-summer mediterranean (Köppen Csb).
What is the weather like in South San Francisco in November?
Highs average 64°F and lows 48°F, with about 2.0 inches of precipitation.
What time is sunrise in South San Francisco?
Around 6:48 AM in mid-November, and sunset around 4:59 PM. Today’s exact times are shown above.
Where does this South San Francisco weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of South San Francisco.
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