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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

San Jose, San Jose International Airport (KSJC)

Lat: 37.35917°NLon: 121.92417°WElev: 59.0ft.

Mostly Cloudy

61°F

16°C

Humidity 80%
Wind Speed N 0 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Sep 01:25 AM PDT
Extended Forecast for

Santa Clara CA

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 79. Light north northwest wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 56. North wind 5 to 8 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 83. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light west northwest in the evening. Winds could gust as high as 18 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 76.

    High: 76 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 79.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 56. Calm wind.
Friday
Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 79. Light north northwest wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 56. North wind 5 to 8 mph becoming calm in the evening.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 83. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph becoming light west northwest in the evening. Winds could gust as high as 18 mph.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 76.
Sunday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 56.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Clara CA
 37.35°N 121.96°W (Elev. 89 ft)
Last Update:
1:26 am PDT Sep 18, 2026
Forecast Valid:
1am PDT Sep 18, 2026-6pm PDT Sep 24, 2026
 
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Additional Resources

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