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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

SAN FRANCISCO DOWNTOWN (SFOC1)

Lat: 37.77056°NLon: 122.42694°WElev: 150.0ft.

NA

56°F

13°C

Humidity 98%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 56°F (13°C)
Visibility NA
Last update 18 Jun 03:43 AM PDT
Extended Forecast for

San Francisco CA

Coastal Flood Advisory June 18, 04:39am until June 18, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory June 18, 04:39am until June 18, 05:00am

    NOW until 5:00am Thu

    Coastal Flood Advisory

  • Overnight

    Low: 55 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 65. Southwest wind 7 to 15 mph, with gusts as high as 22 mph.

    High: 65 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 56. Southwest wind 7 to 14 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 65. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 65 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55. Southwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 55 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

Detailed Forecast

Overnight
Cloudy, with a low around 55. Southwest wind around 7 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 65. Southwest wind 7 to 15 mph, with gusts as high as 22 mph.
Thursday Night
Mostly cloudy, with a low around 56. Southwest wind 7 to 14 mph, with gusts as high as 21 mph.
Juneteenth
Partly sunny, with a high near 65. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 55. Southwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Partly sunny, with a high near 64.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Partly sunny, with a high near 64.
Monday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 54.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 66.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Francisco CA
 37.74°N 122.46°W (Elev. 610 ft)
Last Update:
2:56 am PDT Jun 18, 2026
Forecast Valid:
4am PDT Jun 18, 2026-6pm PDT Jun 24, 2026
 
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Additional Resources

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