

Friday night’s southwest winds will stream just enough moisture to the region to raise a slight chance for drizzle overnight into Saturday morning along Highway 1 between Pacifica and Half Moon Bay. Peninsula and Pacific Coast: A chilly weekend is on tap for the Peninsula as a cool breeze arrives Friday afternoon, keeping daytime highs in the mid-50s on the coast and San Bruno Gap and upper 50s south of Millbrae. These showers are looking to clear out by Saturday night into Sunday morning, making way for sunnier skies and daytime highs in the upper 50s on the west side and along Mission Bay and the Embarcadero, while highs reach the lower 60s in the rest of the city.

Expect intermittent showers Saturday, with gloomy overcast skies over most of the city. Friday’s winds will continue overnight, reeling in drizzle for the hillsides and waterfront that will evolve into light showers. Look for mostly cloudy skies and daytime highs in the mid-50s on the west side and upper 50s east of Sutro Tower on Friday and Saturday.Īs southwest winds pick up Friday, gusts are set to peak at around 25 mph around Twin Peaks, Bernal Heights and Mount Davidson, along with the Embarcadero, Presidio and Ocean Beach. San Francisco: Another low-pressure system is set to roll up between Friday and Sunday, keeping temperatures from fluctuating much. Weather models are forecasting a more typical weather setup for the Bay Area after Monday: Coastal fog and light drizzle is right around the corner. The rainmaker coming in Friday night is set to bring rainfall levels that are more typical for this time of the year, with downtown San Francisco forecast to measure a few hundredths of an inch. This week’s wet pattern is unusual for May in the Bay Area, and resembles storms seen in late February or March. Even San Jose, which usually is rainshadowed and only measures 0.07 inches of rain, wound up measuring 0.20 inches. This year, 0.94 inches of rain were measured. The same goes for inland cities. On average, the Redwood City weather station measures around 0.10 inches of rain in the first three days of May. On average, the first three days of May typically measure less than 0.10 inches - largely the result of lighter showers and the gradual transition to more frequent drizzles, mist and fog. The cutoff low from earlier in the week left behind over an inch of rain during its 3-day run, packing a punch downtown. But this wet season in the Bay Area has been anything but normal. The downtown San Francisco station normally sees around 0.7 inches of rain over the month of May, which is roughly half of the rainfall we’d see in April. The rest of the Bay Area can expect rainfall totals closer to a tenth of an inch.Īccording to the San Francisco weather station’s monthly climate normals, May tends to be at the very tail end of the wet season, with most rainfall tapering off after March.

Other hot spots include the Diablo Range and the eastern foothills of the Santa Clara Valley, including East San Jose. The North Bay will have the highest chance of showers, with up to a third of an inch of rain possible in some of the Sonoma County highlands. Baron/Lynxīoth the American and European weather models forecast that the bulk of the rain will fall overnight between Friday and Saturday, with residual showers into Saturday morning. Most of the Bay Area is forecast to see anywhere from a few hundredths of an inch to a tenth of an inch of rain, while some of the higher elevations in the Diablo Range and Sonoma County Mountains could see totals closer to a third of an inch of rain. Weather models aren’t gung ho on large accumulations of rain between Friday night and Saturday. One of those lows is forecast to arrive in Northern California on Friday night, raising chances of light showers in parts of the Bay Area. More sunshine is forecast to break through some of the clouds Friday as the jet stream flows over California again, helping clear out the cutoff low responsible for most of this week’s unsettled weather.īut the positioning of the jet stream will also help a new low-pressure system flow in above the Pacific Ocean and near California. Climatologically, there is some truth to that sentiment. These May showers may feel out of season for many residents, considering the past few Mays were warmer and drier.
