A storm forecast for Saturday, which began with light rain Friday evening, threatens to put a dreary cap on a summer more memorable for cool, overcast days on the North Coast rather than sunny beach weather.
Although the official equinox is 1:44 p.m. Sunday, signs on Friday revealed that fall has already descended upon Sonoma County.
A Pacific Northwest cold front moving across the North Coast was expected to bring up to a half-inch of rain and low temperatures into the 40s, said Bob Benjamin, forecaster with the National Weather Service.
"Probably the first cold front of the season will be draping Sonoma County," he said. "There will be a noticeable cool down. It's going to feel like fall."
Temperatures are expected to climb back into the 80s as the system passes Sunday, he said, bringing a pleasant start to fall.
"It was a fairly mild summer," Benjamin said. "We never had any periods of extremely hot weather."
Temperatures in Santa Rosa this summer averaged 80 degrees, below the 84 degree average, according to AccuWeather, a forecasting service.
With the grape harvest in high gear and Redwood Empire football teams in final tune up games before league play, Sonoma County residents readied for fall Friday afternoon.
Jim Groverman, owner of Petaluma Pumpkin Patch and Amazing Corn Maze, laid a tarp over a pyramid of hay bales in preparation for next week's opening day.
The popular fall attraction in its 20th year regularly slows traffic along Highway 101 as drivers gawk at the towering corn stalks.