Water Temperature of San Francisco Bay in San Rafael, CA
Current Water Temperature
Measurement Time: Sunday, December 21, 2025, 6:00 AM PST
Temperature Locations
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Local Points of Interest
Richmond, CASponsored Content
Station Name: SAN FRANCISCO BAY A RICHMOND-SAN RAFAEL BRIDGE CA
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
Nearest Address:
Richmond-San Rafael Bridge
San Rafael, CA 94801
Marin County
GPS Coordinates: 37.93527778, -122.4463889
Nearby Water Temperatures
San Francisco Bay, Richmond, CA (2.6 mi)San Francisco Bay, San Francisco, CA (7.6 mi)
Rodeo Pond, Sausalito, CA (8.3 mi)
Rodeo Lagoon, Sausalito, CA (8.5 mi)
Rodeo Lagoon, Sausalito, CA (8.7 mi)
San Francisco Bay, San Francisco, CA (9.0 mi)
San Francisco Bay, San Francisco, CA (9.5 mi)
San Francisco Bay, Alameda, CA (13.8 mi)
Carquinez Strait, Martinez, CA (18.8 mi)
Suisun Bay, Concord, CA (23.7 mi)
San Francisco Bay, San Mateo, CA (23.8 mi)
Pacific Ocean, San Francisco, CA (24.8 mi)
Drakes Bay, Inverness, CA (29.0 mi)
Redwood Creek, Redwood City, CA (32.3 mi)
San Francisco Bay, Menlo Park, CA (34.7 mi)
Weather for San Rafael, California
Current Weather

Humidity: 83%
Feels Like: 61°F
Wind: SSW 24.8 mph
Wind Gusts: 37.6 mph
Precipitation: 0.02 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0.1
Five Day Weather Forecast

Sun
H: 57°F
L: 55°F

Mon
H: 55°F
L: 53°F

Tue
H: 56°F
L: 49°F

Wed
H: 57°F
L: 51°F

Thu
H: 55°F
L: 52°F
Air Quality
Nitrogen Dioxide: 7.55 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 57 μg/m3
Astronomical
Sun Transit: 12:08 AM
Sunset: 4:54 PM
Daylight: 9 hrs 32 mins
Moon Transit: 1:38 PM
Moonset: 6:22 PM
Moon Phase: New
Moon Illumination: 1.5%
Best Times for Fishing or Hunting
Major Periods
9:05 PM - 11:35 PM1:08 PM - 3:38 PM
Minor Periods
5:52 PM - 7:22 PM8:30 AM - 10:00 AM
Action Rating: 3 out of 5
Flood Watch issued December 20 at 11:32PM PST until December 22 at 4:00PM PST by NWS San Francisco CA
Effective: Sat December 20, 2025, 11:32 PM
Expires: Sun December 21, 2025, 2:00 PM
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Northern San Francisco Bay Area (Napa, Sonoma, and Marin counties). * WHEN...Through Monday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Moderate to heavy rain associated with an atmospheric river will impact the region. 2-3" of rain is expected in the valleys during the watch period, with up to 6" in the coastal mountains. Area rivers, streams, and creeks that are prone to flooding could see rapid rises during and after heavy rainfall. There is a slight chance for flash flooding, particularly in urban areas Sunday and Monday. Debris flows are possible particularly for the Pickett Burn Scar. - http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Flood Watch issued December 20 at 1:03PM PST until December 26 at 4:00PM PST by NWS Sacramento CA
Effective: Sat December 20, 2025, 1:03 PM
Expires: Sun December 21, 2025, 4:00 PM
A series of warm atmospheric rivers will bring moderate to heavy rain to the Valley, foothills, and mountains the week of Christmas. The prolonged period of rain will bring the risk of flooding to the Sacramento Valley, northern San Joaquin Valley, northern Sierra Nevada and adjacent foothills, as well as the Coastal Range. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northern California, including the following areas, the Sacramento Valley, northern San Joaquin Valley, Delta region, Sierra Nevada and adjacent foothills, and Coastal Range. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff will result in rises along area rivers, creeks, streams. Small streams and creeks may rise out of their banks. Flooding may occur in low-lying, poor drainage, and urban areas. Mudslides and rockslides may occur in mountain and foothill areas. * ADDITIONAL DETAILS... - Periods of moderate to heavy rain are forecast the week of Christmas. Debris flows are not expected over recent burn scars, but do anticipate enhanced runoff in/below scars. - http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Weather Forecast
Average Temperature: 55.6°F
Average Humidity: 94%
Wind: 26.4 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 15.22 μg/m3
Sulphur Dioxide: 2.87 μg/m3
Ozone: 39.84 μg/m3
Astronomical
Sun Transit: 12:08 AM
Sunset: 4:54 PM
Daylight: 9 hrs 32 mins
Moon Transit: 1:38 PM
Moonset: 6:22 PM
Moon Phase: New
Moon Illumination: 1.5%
Best Times for Fishing or Hunting
Major Periods
9:05 PM - 11:35 PM1:08 PM - 3:38 PM
Minor Periods
5:52 PM - 7:22 PM8:30 AM - 10:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 54.3°F
Average Humidity: 97%
Wind: 6.3 mph
UV Index: 0.3
Air Quality
Nitrogen Dioxide: 12.4 μg/m3
Sulphur Dioxide: 2.79 μg/m3
Ozone: 44.76 μg/m3
Astronomical
Sun Transit: 12:08 AM
Sunset: 4:55 PM
Daylight: 9 hrs 32 mins
Moon Transit: 2:28 PM
Moonset: 7:26 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:58 PM - 4:28 PM
Minor Periods
6:56 PM - 8:26 PM9:08 AM - 10:38 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 52.9°F
Average Humidity: 92%
Wind: 21.9 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 23.37 μg/m3
Sulphur Dioxide: 3.62 μg/m3
Ozone: 30.6 μg/m3
Astronomical
Sun Transit: 12:09 AM
Sunset: 4:55 PM
Daylight: 9 hrs 32 mins
Moon Transit: 3:16 PM
Moonset: 8:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:46 PM - 5:16 PM
Minor Periods
8:01 PM - 9:31 PM9:40 AM - 11:10 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 53.9°F
Average Humidity: 84%
Wind: 28.4 mph
UV Index: 0.3
Air Quality
Nitrogen Dioxide: 11.16 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 65.2 μg/m3
Astronomical
Sun Transit: 12:09 AM
Sunset: 4:56 PM
Daylight: 9 hrs 33 mins
Moon Transit: 4:02 PM
Moonset: 9:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM3:32 PM - 6:02 PM
Minor Periods
9:05 PM - 10:35 PM10:08 AM - 11:38 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 54.5°F
Average Humidity: 78%
Wind: 31.1 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 7 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 81.31 μg/m3
Astronomical
Sun Transit: 12:10 AM
Sunset: 4:56 PM
Daylight: 9 hrs 33 mins
Moon Transit: 4:46 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM4:16 PM - 6:46 PM
Minor Periods
10:11 PM - 11:41 PM10:33 AM - 12:03 AM
Action Rating: 2 out of 5
