South San Francisco, CA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for South San Francisco, CA in one place.
Mostly sunny, with a high near 67. West southwest wind 8 to 13 mph, with gusts as high as 22 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: May 24, 2026 1:00 AM PDT.
The active forecast window currently covers May 25 to May 30, 2026 for South San Francisco, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 25 to May 30, 2026
- Latest sync
- May 24, 2026 1:00 AM PDT
- Forecast office
- MTR
- Source
- NOAA / NWS
Daily Outlook
This Week in South San Francisco
Saturday looks like the warmest upcoming period in South San Francisco at 74 degrees F.
Monday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Tuesday at about 8 to 17 mph W.
The forecast from May 25 through May 30 stays mostly dry.
Forecast Details
- Last updated
- May 24, 2026 1:00 AM PDT
- Coverage
- 6 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
Partly cloudy, with a low around 49. West southwest wind around 14 mph, with gusts as high as 23 mph.
Sunny, with a high near 72.
Clear, with a low around 50.
Sunny, with a high near 73.
Mostly clear, with a low around 52.
Sunny, with a high near 68.
Partly cloudy, with a low around 51.
Sunny, with a high near 70.
Mostly clear, with a low around 51.
Sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Mostly Sunny
|
67°F |
8 to 13 mph
WSW
|
|
Monday Night
May 25
|
Partly Cloudy
|
49°F |
14 mph
WSW
|
|
Tuesday
May 26
|
Sunny
|
72°F |
8 to 17 mph
W
|
|
Tuesday Night
May 26
|
Clear
|
50°F |
5 to 17 mph
W
|
|
Wednesday
May 27
|
Sunny
|
73°F |
5 to 10 mph
W
|
|
Wednesday Night
May 27
|
Mostly Clear
|
52°F |
3 to 10 mph
WSW
|
|
Thursday
May 28
|
Sunny
|
68°F |
3 to 12 mph
SSW
|
|
Thursday Night
May 28
|
Partly Cloudy
|
51°F |
5 to 10 mph
SW
|
|
Friday
May 29
|
Sunny
|
70°F |
5 to 9 mph
SW
|
|
Friday Night
May 29
|
Mostly Clear
|
51°F |
3 to 9 mph
SW
|
|
Saturday
May 30
|
Sunny
|
74°F |
3 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South San Francisco.
