Grass Valley Weather in September
September in Grass Valley averages 28°C (82°F) during the day and 13°C (55°F) at night. With only 13 mm (0.5 in) of rainfall expected on average, it's a largely dry month.
Rainfall in Grass Valley in September
Past climate data indicates that roughly 2 days will see rain, totalling around 13 mm (0.5 in) for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in Grass Valley in September
If you're visiting Grass Valley in September, expect excellent temperatures with highs of 28°C (82°F) and overnight lows of 13°C (55°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.If your ideal day consists of dry skies and pleasant temperatures, May, June, September and October typically offer the best circumstances for Grass Valley.
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 Grass Valley's climate page.
Grass Valley Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
28°C (82°F)
Chance of Rain
7%
Precipitation
13 mm (0.5 in)
Rainy days
2 days
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 Grass Valley 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.What To Do in Grass Valley 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 Grass Valley's climate page.
See the full Grass Valley climate overview or explore weather in the United States of America.
