Sunnyvale, CA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Sunnyvale, CA in one place.
Sunny, with a high near 89. West wind 2 to 6 mph.
Local Weather Overview
This forecast page for Sunnyvale, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 22, 2026 1:09 PM PDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Sunnyvale, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 1:09 PM PDT
- Forecast office
- MTR
- Source
- NOAA / NWS
Daily Outlook
This Week in Sunnyvale
Wednesday looks like the warmest upcoming period in Sunnyvale at 89 degrees F.
Saturday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Thursday at about 3 to 9 mph SW.
The forecast from Sep 23 through Sep 28 stays mostly dry.
Forecast Details
- Last updated
- Sep 22, 2026 1:09 PM PDT
- Coverage
- 7 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
Mostly clear, with a low around 59. West southwest wind around 6 mph.
Sunny, with a high near 86. Southwest wind 3 to 9 mph.
Partly cloudy, with a low around 57.
Sunny, with a high near 76.
Mostly clear, with a low around 53.
Sunny, with a high near 75.
Partly cloudy, with a low around 52.
Sunny, with a high near 72.
Mostly clear, with a low around 52.
Sunny, with a high near 80.
Clear, with a low around 54.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Sunny
|
89°F |
2 to 6 mph
W
|
|
Wednesday Night
Sep 23
|
Mostly Clear
|
59°F |
6 mph
WSW
|
|
Thursday
Sep 24
|
Sunny
|
86°F |
3 to 9 mph
SW
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
57°F |
9 mph
SW
|
|
Friday
Sep 25
|
Sunny
|
76°F |
9 mph
SW
|
|
Friday Night
Sep 25
|
Mostly Clear
|
53°F |
5 to 8 mph
SW
|
|
Saturday
Sep 26
|
Sunny
|
75°F |
5 to 8 mph
WSW
|
|
Saturday Night
Sep 26
|
Partly Cloudy
|
52°F |
8 mph
SW
|
|
Sunday
Sep 27
|
Sunny
|
72°F |
8 mph
SW
|
|
Sunday Night
Sep 27
|
Mostly Clear
|
52°F |
5 to 8 mph
SW
|
|
Monday
Sep 28
|
Sunny
|
80°F |
3 to 7 mph
WSW
|
|
Monday Night
Sep 28
|
Clear
|
54°F |
7 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sunnyvale.
