Santa Clara County, CA Weather Forecast
County weather hub
Sunny
Compare major city weather across Santa Clara County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 84.
County Weather Overview
This county weather page brings together forecast coverage for Santa Clara County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 16 of 16 mapped cities in Santa Clara County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 18 to May 20, 2026
- Latest sync
- May 14, 2026 5:56 PM PDT
- Forecast office
- MTR
- Source
- NOAA / NWS
Daily Outlook
This Week in Santa Clara County
Wednesday looks like the warmest upcoming period in Santa Clara County at 90 degrees F.
Monday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Monday at about 13 to 21 mph NNW.
The forecast from May 18 through May 20 stays mostly dry.
Forecast Details
- Last updated
- May 14, 2026 5:56 PM PDT
- Coverage
- 4 days
- Time zone
- America/Los_Angeles
- Forecast office
- MTR
- Radar station
- KMUX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 52.
Sunny, with a high near 88.
Mostly clear, with a low around 54.
Sunny, with a high near 90.
Mostly clear, with a low around 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
May 18
|
Sunny
|
84°F |
13 to 21 mph
NNW
|
|
Monday Night
May 18
|
Clear
|
52°F |
2 to 13 mph
W
|
|
Tuesday
May 19
|
Sunny
|
88°F |
2 to 10 mph
NW
|
|
Tuesday Night
May 19
|
Mostly Clear
|
54°F |
2 to 10 mph
WSW
|
|
Wednesday
May 20
|
Sunny
|
90°F |
1 to 10 mph
W
|
|
Wednesday Night
May 20
|
Mostly Clear
|
55°F |
2 to 10 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Santa Clara County.
Coverage
Forecast coverage currently spans 16 of 16 mapped cities in Santa Clara County.
Largest mapped city population in this region: 1,013,616.
