Possibility of rain in these cities tonight
A cold Thursday morning across the Bay Area will be followed by increasing clouds as a weak cold front approaches Northern California this afternoon.
High temperatures will be in the lower 60s along the coast and upper 60s inland. The weather will turn partly cloudy at night, with light rain falling in some areas along the coast on Friday morning. Overnight lows will be in the lower 40s to lower 50s.
The most likely time for rain to fall is Friday between 6 a.m. and 2 p.m., with a 50% chance of light rain accumulating along the coasts of Sonoma and Marin counties. The inland valleys of the Wine Country have a 30% chance of rain. Aside from the peninsula, drizzle is unlikely elsewhere in the Gulf region.
Dry weather will give way to mostly sunny skies this weekend, with seasonal high temperatures in the 60s to 70s.
Thursday collapse
San Francisco: Passing clouds and pleasant afternoon temperatures are available. The temperature is expected to reach 66 degrees, which is the average high temperature on November 9, with slight differences between the western and eastern sides of the city.
The Richmond and Sunset areas will peak in the lower 60s, with mid-60s in downtown, Potrero Hill, South of Market, and the Mission District. Clouds will increase throughout the day, becoming overcast overnight. Lows will be in the lower 50s.
North Gulf: A patchy morning frost is possible in inland Sonoma County, where temperatures start in the 30s. Seasonal temperatures are expected to reach across the North Bay by the afternoon, with highs in the upper 60s to near 70 degrees in Napa, Santa Rosa, San Rafael, Fairfield and Vacaville. Mid-60s are expected in Sausalito and Vallejo.
Clouds are expected to increase throughout the day, becoming mainly overcast in the afternoon. Overnight lows will be in the mid to upper 40s with areas of drizzle in Marin and Sonoma counties by Friday morning.
East Bay: Cool mornings in the lower 40s around the Tri-Valley will be followed by a warmer afternoon, with highs in Livermore and Dublin approaching 70 under partly cloudy skies. High 60s are expected in Concord, Walnut Creek and San Ramon. Lows will drop to the mid 40s under overcast skies.
In Richmond, Berkeley, Oakland, Alameda, Hayward and Fremont, highs will be in the mid 60s, with clouds increasing throughout the day. Lows will be in the upper 40s with mostly cloudy skies.
Pacific Coast and Peninsula: Skies are expected to start out sunny along the peninsula before turning cloudy at sunset. Highs will be in the lower 60s in Pacifica and Half Moon Bay. The mid-60s are expected in Daly City, South San Francisco, Burlingame and San Mateo. Redwood City could reach the upper 60s.
Lows will be in the upper 40s to 50s under overcast skies. Some rain is possible early Friday morning along the coast, but the biggest chance won’t come until midday Friday.
South Bay and Santa Cruz: The sunny morning will give way to passing clouds during the afternoon across Santa Clara and Santa Cruz counties. High temperatures will be close to seasonal averages, in the upper 60s in Cupertino, Sunnyvale and Santa Cruz and lower 70s in San Jose.
If there are enough breaks between the clouds around 5pm, this could result in a vibrant sunset. Clouds will continue to increase overnight, with lows in the mid to upper 40s.
Contact Anthony Edwards: anthony.edwards@sfchronicle.com
