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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

San Jose, San Jose International Airport (KSJC)

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

Partly Cloudy

64°F

18°C

Humidity 77%
Wind Speed NW 12 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 18 Sep 07:53 PM PDT
Extended Forecast for

Santa Clara CA

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, increasing clouds, with a low around 56. North northwest wind around 6 mph becoming calm in the evening.

    Low: 56 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 82. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 82 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 57. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 76. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 56. West northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 56 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 8am. 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

  • Tuesday

    Tuesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, increasing clouds, with a low around 56. North northwest wind around 6 mph becoming calm in the evening.
Saturday
Areas of fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 82. Light and variable wind becoming north northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 57. Northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Sunday
Partly sunny, with a high near 76. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Sunday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 56. West northwest wind 5 to 9 mph becoming calm after midnight.
Monday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 62.
Friday
Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Clara CA
 37.37°N 121.96°W (Elev. 49 ft)
Last Update:
1:26 pm PDT Sep 18, 2026
Forecast Valid:
8pm PDT Sep 18, 2026-6pm PDT Sep 25, 2026
 
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Additional Resources

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