Santa Clara County, CA Weather Forecast

County weather hub

84°
F

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.

Monday, May 18, 2026
Wind: 13 to 21 mph NNW
Monday

Sunny, with a high near 84.

County weather hub

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
Next High
84°F
Monday
Next Low
52°F
Monday Night
Rain Outlook
0
Periods mentioning precipitation
Windiest
13 to 21 mph
Monday

Daily Outlook

Today
May 18
Sunny
84 °F
/ 52°F
Wind 13 to 21 mph
Tue
May 19
Sunny
88 °F
/ 54°F
Wind 2 to 10 mph
Wed
May 20
Sunny
90 °F
/ 55°F
Wind 1 to 10 mph

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 source

Extended Forecast

Monday Night
May 18
52°F
Clear
2 to 13 mph W

Clear, with a low around 52.

Tuesday
May 19
88°F
Sunny
2 to 10 mph NW

Sunny, with a high near 88.

Tuesday Night
May 19
54°F
Mostly Clear
2 to 10 mph WSW

Mostly clear, with a low around 54.

Wednesday
May 20
90°F
Sunny
1 to 10 mph W

Sunny, with a high near 90.

Wednesday Night
May 20
55°F
Mostly Clear
2 to 10 mph WSW

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
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Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.