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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

San Jose, San Jose International Airport (KSJC)

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

Clear

61°F

16°C

Humidity 77%
Wind Speed WNW 4 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Aug 01:30 AM PDT
Extended Forecast for

Santa Clara CA

  • Overnight

    Overnight: Partly cloudy, with a low around 57. North northwest wind around 6 mph becoming calm.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 77. Light and variable wind becoming north northwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. North northwest wind 5 to 10 mph becoming light west northwest after midnight.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Light northwest wind increasing to 5 to 10 mph in the afternoon.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. Northwest wind 8 to 13 mph becoming light west after midnight. Winds could gust as high as 21 mph.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 57. North northwest wind around 6 mph becoming calm.
Monday
Sunny, with a high near 77. Light and variable wind becoming north northwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Monday Night
Mostly clear, with a low around 57. North northwest wind 5 to 10 mph becoming light west northwest after midnight.
Tuesday
Sunny, with a high near 76. Light northwest wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 57. Northwest wind 8 to 13 mph becoming light west after midnight. Winds could gust as high as 21 mph.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 61.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Clara CA
 37.36°N 121.99°W (Elev. 66 ft)
Last Update:
1:25 am PDT Aug 18, 2025
Forecast Valid:
1am PDT Aug 18, 2025-6pm PDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation