A DRIVE AROUND TOWN
Walnut Creek - California - 4K Downtown Drive
Walnut Creek - California - 4K Downtown Drive. A film shared by Mileage Mike Travels.
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Weather · September
Walnut Creek weather in September
Average highs of 85°F, lows of 58°F and 0.10 in of rain, from 30 years of weather records.
September is Walnut Creek’s 3rd warmest month, with average highs of 85°F and lows of 58°F. That is 3° cooler than August, and 12° above the yearly average high.
- Average high
- 85°F
- Average low
- 58°F
- Precipitation
- 0.10 in
- Wet days
- 1
- Sunrise · sunset
- 6:49 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 Walnut Creek in September
See all upcoming events.
See Walnut Creek
A look around town before you go.
September compared with the months around it
Planning a trip? See the best time to visit Walnut Creek and today’s forecast.
Questions
How hot does it get in Walnut Creek in September?
Average highs are 85°F and average lows 58°F, for a daily mean of 72°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Walnut Creek 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 Walnut Creek in September?
Around mid-September the sun rises about 6:49 AM and sets about 7:17 PM, for roughly 12.5 hours of daylight.
Is September a good time to visit Walnut Creek?
The mildest months for visiting are May, June, October. September is warm, with Halloween events.
NOAA U.S. Climate Normals 1991–2020, Concord Buchanan Fld station (6.2 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.