Water Temperature of San Francisco Bay in Menlo Park, CA

Current Water Temperature

57.7°F

Measurement Time: Sunday, February 8, 2026, 2:45 AM PST

Temperature Locations

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Local Points of Interest

Don Edwards San Francisco Bay National Wildlife Refuge; Bedwell Bayfront Park; Dumbarton Bridge; Newark, CA; East Palo Alto, CA

San Francisco Bay

Station Name: SOUTH SAN FRANCISCO BAY AT DUMBARTON BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
Dumbarton Bridge
Menlo Park, CA
San Mateo County

GPS Coordinates: 37.5041043, -122.1205192

Nearby Water Temperatures

Redwood Creek, Redwood City, CA (4.9 mi)
Coyote Creek, Alviso, CA (6 mi)
San Francisco Bay, San Mateo, CA (11 mi)
Coyote Creek, San Jose, CA (12 mi)
Arroyo Hondo, San Jose, CA (19.5 mi)
San Francisco Bay, Alameda, CA (20.9 mi)
Arroyo Valle, Livermore, CA (21.5 mi)
San Francisco Bay, San Francisco, CA (25.6 mi)
San Francisco Bay, San Francisco, CA (27.7 mi)
San Francisco Bay, San Francisco, CA (28.2 mi)
Coyote Creek, Coyote, CA (28.7 mi)
Rodeo Pond, Sausalito, CA (31.7 mi)
Rodeo Lagoon, Sausalito, CA (31.7 mi)
Rodeo Lagoon, Sausalito, CA (31.9 mi)
San Francisco Bay, Richmond, CA (33 mi)

Weather for Menlo Park, California

Current Weather

54°F
Mist
Mist
54°F
52.4°F
94%
NW 3.1 mph
3.6 mph
52.5°F
51.2°F
0 in
50%
2 mi
1028 mbar
3.1

Five Day Weather Forecast

Sunny
Sun
H: 66°F
L: 46°F
Partly Cloudy
Mon
H: 63°F
L: 53°F
Overcast
Tue
H: 64°F
L: 51°F
Heavy rain
Wed
H: 56°F
L: 47°F
Patchy rain nearby
Thu
H: 60°F
L: 47°F

Air Quality

AQI: 2 - Moderate
PM2.5: 18.75 μg/m3
PM10: 26.65 μg/m3
Carbon Monoxide: 301.85 μg/m3
Nitrogen Dioxide: 44.55 μg/m3
Sulphur Dioxide: 6.65 μg/m3
Ozone: 26 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:22 AM
Sunset: 5:40 PM
Daylight: 10 hrs 35 mins
Moonrise: 12:03 AM
Moon Transit: 5:14 AM
Moonset: 10:19 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:44 AM - 7:14 AM
12:41 AM - 3:11 PM

Minor Periods

9:49 AM - 11:19 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued February 8 at 8:15AM PST until February 8 at 11:00AM PST by NWS San Francisco CA

Effective: Sun February 8, 2026, 8:15 AM
Expires: Sun February 8, 2026, 11:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...East Bay Interior Valleys and the eastern half of the San Francisco Bay Shoreline. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Visibilities will be slowly improving through 11am, though travelers will continue to move in and out of dense fog around the Bay area.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Patchy dense fog will result in sudden changes in visibility. Visibility at times will fall below one-quarter of a mile. Use your low beam headlights, slow down, and be prepared for periods of hazardous driving conditions.
Sunday, February 8, 2026

Weather Forecast

Sunny
65.7°F
46.2°F
53.7°F
88%
0 in
0%
0%
8.3 mph
0.7


Air Quality

AQI: 2 - Moderate
PM2.5: 22.65 μg/m3
PM10: 27.26 μg/m3
Carbon Monoxide: 342.97 μg/m3
Nitrogen Dioxide: 41.66 μg/m3
Sulphur Dioxide: 8.54 μg/m3
Ozone: 29.28 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:22 AM
Sunset: 5:40 PM
Daylight: 10 hrs 35 mins
Moonrise: 12:03 AM
Moon Transit: 5:14 AM
Moonset: 10:19 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:44 AM - 7:14 AM
12:41 AM - 3:11 PM

Minor Periods

9:49 AM - 11:19 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, February 9, 2026

Weather Forecast

Partly Cloudy
63.3°F
52.5°F
57°F
72%
0 in
0%
0%
5.8 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 13.4 μg/m3
PM10: 17.29 μg/m3
Carbon Monoxide: 233.33 μg/m3
Nitrogen Dioxide: 29.72 μg/m3
Sulphur Dioxide: 4.99 μg/m3
Ozone: 36.76 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:22 AM
Sunset: 5:41 PM
Daylight: 10 hrs 37 mins
Moonrise: 1:04 AM
Moon Transit: 6:00 AM
Moonset: 10:50 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
1:28 PM - 3:58 PM

Minor Periods

10:20 AM - 11:50 AM
12:34 AM - 2:04 AM

Action Rating: 2 out of 5

Tuesday, February 10, 2026

Weather Forecast

Overcast
63.5°F
51.1°F
56.2°F
67%
0 in
0%
0%
23.5 mph
0.3


Air Quality

AQI: 2 - Moderate
PM2.5: 17.28 μg/m3
PM10: 19.39 μg/m3
Carbon Monoxide: 216.85 μg/m3
Nitrogen Dioxide: 39.55 μg/m3
Sulphur Dioxide: 5.77 μg/m3
Ozone: 33.08 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:22 AM
Sunset: 5:43 PM
Daylight: 10 hrs 40 mins
Moonrise: 2:05 AM
Moon Transit: 6:47 AM
Moonset: 11:26 AM
Moon Phase: Last Quarter
Moon Illumination: 30.3%

Best Times for Fishing or Hunting

Major Periods

6:17 AM - 8:47 AM
2:16 PM - 4:46 PM

Minor Periods

10:56 AM - 12:26 AM
1:35 AM - 3:05 AM

Action Rating: 2 out of 5

Wednesday, February 11, 2026

Weather Forecast

Heavy rain
55.9°F
46.9°F
51.7°F
87%
2.26 in
87%
0%
17 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 12.87 μg/m3
PM10: 15.91 μg/m3
Carbon Monoxide: 222.98 μg/m3
Nitrogen Dioxide: 29.41 μg/m3
Sulphur Dioxide: 4.19 μg/m3
Ozone: 34.6 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:22 AM
Sunset: 5:44 PM
Daylight: 10 hrs 42 mins
Moonrise: 3:04 AM
Moon Transit: 7:38 AM
Moonset: 12:10 AM
Moon Phase: Last Quarter
Moon Illumination: 20.5%

Best Times for Fishing or Hunting

Major Periods

7:08 AM - 9:38 AM
3:07 PM - 5:37 PM

Minor Periods

11:40 AM - 1:10 PM
2:34 AM - 4:04 AM

Action Rating: 4 out of 5

Thursday, February 12, 2026

Weather Forecast

Patchy rain nearby
60.2°F
46.8°F
52.7°F
74%
0.01 in
81%
0%
9.2 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 17.57 μg/m3
PM10: 19.91 μg/m3
Carbon Monoxide: 355.77 μg/m3
Nitrogen Dioxide: 49.93 μg/m3
Sulphur Dioxide: 6.05 μg/m3
Ozone: 17.23 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:22 AM
Sunset: 5:45 PM
Daylight: 10 hrs 44 mins
Moonrise: 4:00 AM
Moon Transit: 8:30 AM
Moonset: 1:01 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

8:00 AM - 10:30 AM
4:00 PM - 6:30 PM

Minor Periods

12:31 AM - 2:01 PM
3:30 AM - 5:00 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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