Walnut Creek Weather in September
In Walnut Creek, September brings high daytime temperatures around 29°C (84°F), with nights cooling to 13°C (55°F). Minimal rainfall is to be expected.
Rainfall in Walnut Creek in September
Historically, September sees about a single day of rain, with a monthly average of 2.8 mm (0.1 in). If rain does fall, it tends to be very light and barely worth getting out an umbrella for.
Temperature in Walnut Creek in September
If you're visiting Walnut Creek in September, expect perfect temperatures with highs of 29°C (84°F) and overnight lows of 13°C (55°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Walnut Creek in September
Enjoy a sunny month with about 270 hours of sunshine, the clear skies make Walnut Creek even more beautiful.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, June, August, September and October typically offer the best weather for Walnut Creek.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Walnut Creek's climate page.
Walnut Creek Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
29°C (84°F)
Chance of Rain
3%
Precipitation
2.8 mm (0.1 in)
Rainy days
a single day
Humidity
73% *
Sunshine
270 hours *
Percentage Sunshine
73% *
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Walnut Creek in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Walnut Creek in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Walnut Creek's climate page.
Temperature Rainfall Sunshine Humidity
See the full Walnut Creek climate overview or explore weather in the United States of America.
