Tuesday looks like the last weekday with high temperatures in the mid to upper 70s Inland. A spring storm system spinning just off the coast of California will slowly track toward the Bay Area Wednesday, ushering in light showers Wednesday afternoon and heavier periods of rain early Thursday.
There is also a risk of isolated thunderstorms as the unstable air mass moves over the Bay Area.
On Tuesday expect cool temperatures to start the day with plenty of mid to upper 50s across the Bay Area.
A full deck of low clouds is expected over the Bay Area through early Tuesday afternoon, making way to intervals of clouds and sun.
Daytime highs look comfortable, topping out in the 60s at the coast, bayside and inland numbers will run in the upper 60s and 70s.
Clouds will likely increase Tuesday evening as an area of low pressure approaches the coastline.
Expect a mostly cloudy and breezy start Wednesday with morning lows in the 50s across the Bay Area.
Showers will likely hold off until mid-morning Wednesday, with steady light rain expected over the greater Bay Area between 2 p.m. and 8 p.m.
Overnight Tuesday looks mostly dry, but another wave of moisture will start to move into the North Bay around 6 a.m. Thursday morning.
Showers will spread south of the Golden Gate Bridge after 10 a.m. and move into the South Bay between noon and 2 p.m. Partial clearing is expected by Thursday evening.
Rainfall totals will likely range from Trace amounts to .25" in the South Bay & East Bay with .10" to .50" in the North Bay and on the Peninsula.
High pressure takes over for Friday, which looks mostly dry and warmer with highs near average for this time of year.