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 much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Current conditions at

San Jose, San Jose International Airport (KSJC)

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

Overcast

72°F

22°C

Humidity 49%
Wind Speed WSW 5 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 17 Sep 02:05 PM PDT
Extended Forecast for

Santa Clara CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 75. Northwest wind 6 to 9 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 56. North northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Light west northwest wind becoming northwest 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Friday Night

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

    Low: 56 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 84. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 77.

    High: 77 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 75. Northwest wind 6 to 9 mph.
Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 56. North northwest wind 5 to 8 mph becoming calm in the evening.
Friday
Patchy fog before 9am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Light west northwest wind becoming northwest 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. Northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 84. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 57.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 77.
Sunday Night
Mostly cloudy, with a low around 56.
Monday
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 86.
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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 pm PDT Sep 17, 2026
Forecast Valid:
2pm PDT Sep 17, 2026-6pm PDT Sep 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation