National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >

Current conditions at

San Francisco, San Francisco International Airport (KSFO)

Lat: 37.61961°NLon: 122.36558°WElev: 10.0ft.

Partly Cloudy

50°F

10°C

Humidity 93%
Wind Speed NW 5 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 48°F (9°C)
Visibility 7.00 mi
Wind Chill48°F (9°C)
Last update 22 May 05:00 AM PDT
Extended Forecast for

San Mateo CA

  • Today

    Today: Sunny, with a high near 73. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. West southwest wind 5 to 9 mph becoming light southwest after midnight.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 71. Light south southwest wind becoming west southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 71 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. Southwest wind 5 to 11 mph, with gusts as high as 18 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. Light southwest wind becoming west 5 to 10 mph in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 73. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon.
Tonight
Mostly clear, with a low around 53. West southwest wind 5 to 9 mph becoming light southwest after midnight.
Saturday
Sunny, with a high near 71. Light south southwest wind becoming west southwest 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 53. Southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 69. Light southwest wind becoming west 5 to 10 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 52.
Memorial Day
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Clear, with a low around 51.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Clear, with a low around 54.
Thursday
Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Mateo CA
 37.56°N 122.3°W (Elev. 36 ft)
Last Update:
1:26 am PDT May 22, 2026
Forecast Valid:
5am PDT May 22, 2026-6pm PDT May 28, 2026
 
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