THINGS TO DO · YOUTUBE SHORT
Exploring Downtown Sunnyvale with my fiancé’s cousin 🤗
A local activity Short shared by Belugabee.
Watch on YouTube ↗
Weather · September
Sunnyvale weather in September
Average highs of 78°F, lows of 57°F and 0.10 in of rain, from 30 years of weather records.
September is Sunnyvale’s warmest month, with average highs of 78°F and lows of 57°F. That is 1° warmer than August, and 8° above the yearly average high.
- Average high
- 78°F
- Average low
- 57°F
- Precipitation
- 0.10 in
- Wet days
- 1
- Sunrise · sunset
- 6:50 AM · 7:17 PM
September across the year
High and low Rain
What to wear in September
- Warm days: shorts and T-shirts, with a light layer for cooler evenings.
September is good for
What’s on in Sunnyvale in September
See all upcoming events and school days off.
Around Sunnyvale
See Sunnyvale
A look around town before you go.
THINGS TO DO · YOUTUBE SHORT
Is Downtown Sunnyvale Worth Visiting?
A local activity Short shared by Abdul’s World | Bay Area Travel.
Watch on YouTube ↗September compared with the months around it
Planning a trip? See the best time to visit Sunnyvale and today’s forecast.
Questions
How hot does it get in Sunnyvale in September?
Average highs are 78°F and average lows 57°F, for a daily mean of 68°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Sunnyvale in September?
September averages 0.10 in of precipitation over about 1 days with at least 0.01 in. It is the 10th wettest month of the year.
What time is sunset in Sunnyvale in September?
Around mid-September the sun rises about 6:50 AM and sets about 7:17 PM, for roughly 12.5 hours of daylight.
Is September a good time to visit Sunnyvale?
The mildest months for visiting are June, July, August. September is mild, with Halloween events.
NOAA U.S. Climate Normals 1991–2020, Moffett Federal Airfield station (2.5 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.