South San Francisco, CA Weather Forecast
Local 7-day forecast
Patchy Fog
Track current conditions, temperature changes, wind, and the full daily outlook for South San Francisco, CA in one place.
Patchy fog. Mostly cloudy, with a low around 53. Southwest wind around 2 mph.
Local Weather Overview
This forecast page for South San Francisco, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 9, 2026 5:38 AM PDT.
The active forecast window currently covers Apr 9 to Apr 15, 2026 for South San Francisco, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 9 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 5:38 AM PDT
- Forecast office
- MTR
- Source
- NOAA / NWS
Daily Outlook
This Week in South San Francisco
Wednesday looks like the warmest upcoming period in South San Francisco at 68 degrees F.
Sunday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Saturday at about 7 to 15 mph SSW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 5:38 AM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- MTR
- Radar station
- KMUX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy fog before 8am, then a slight chance of rain between noon and 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Partly sunny, with a high near 67. Southwest wind 2 to 9 mph. Chance of precipitation is 30%.
A chance of rain between 7pm and 2am, then showers and thunderstorms likely. Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. West southwest wind 2 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 64. South southwest wind 2 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 11pm, then rain. Mostly cloudy, with a low around 51. South southwest wind 6 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain before 11am, then showers and thunderstorms. Cloudy, with a high near 59. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a low around 45.
Showers and thunderstorms likely before 5pm, then a slight chance of rain. Partly sunny, with a high near 58.
A slight chance of rain before 11pm. Partly cloudy, with a low around 43.
Sunny, with a high near 63.
Mostly clear, with a low around 43.
Sunny, with a high near 67.
Mostly clear, with a low around 44.
Mostly sunny, with a high near 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 9
|
Patchy Fog
|
53°F |
2 mph
SW
|
|
Thursday
Apr 9
|
Patchy Fog then Chance Showers And Thunderstorms
|
67°F |
2 to 9 mph
SW
|
|
Thursday Night
Apr 9
|
Chance Light Rain then Showers And Thunderstorms Likely
|
52°F |
2 to 8 mph
WSW
|
|
Friday
Apr 10
|
Showers And Thunderstorms
|
64°F |
2 to 10 mph
SSW
|
|
Friday Night
Apr 10
|
Showers And Thunderstorms Likely then Light Rain
|
51°F |
6 to 10 mph
SSW
|
|
Saturday
Apr 11
|
Showers And Thunderstorms
|
59°F |
7 to 15 mph
SSW
|
|
Saturday Night
Apr 11
|
Showers And Thunderstorms
|
45°F |
6 to 13 mph
SSW
|
|
Sunday
Apr 12
|
Showers And Thunderstorms Likely
|
58°F |
6 to 10 mph
SW
|
|
Sunday Night
Apr 12
|
Slight Chance Light Rain then Partly Cloudy
|
43°F |
5 to 10 mph
WNW
|
|
Monday
Apr 13
|
Sunny
|
63°F |
5 to 9 mph
WNW
|
|
Monday Night
Apr 13
|
Mostly Clear
|
43°F |
3 to 9 mph
W
|
|
Tuesday
Apr 14
|
Sunny
|
67°F |
2 to 9 mph
WSW
|
|
Tuesday Night
Apr 14
|
Mostly Clear
|
44°F |
2 to 9 mph
W
|
|
Wednesday
Apr 15
|
Mostly Sunny
|
68°F |
2 to 8 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South San Francisco.
