, Issued at 1125 AM PDT Mon Apr 13 2026 (This afternoon through Tuesday)
Lingering rain showers persist over the Pacific late this morning with these forecast to diminish through the afternoon and evening. The RRFS (rapid refresh forecast system) and other CAMs (convection- allowing models) indicate the potential for isolated rain showers across the higher terrain of the southern Diablo Range and Santa Lucia Range this afternoon, diminishing as the sunsets. Otherwise, mostly dry conditions return to the region this afternoon with afternoon temperatures forecast to be in the upper 50s to low 60s near the coast and low-to-upper 60s across the interior. However, the highest peaks may not reach much above the upper 40s to low 50s.
Tonight, temperatures will be chilly across the interior North Bay Valleys and interior Central Coast with mid-to-upper 30s expected. There is a low end potential for frost, yet widespread coverage in not currently anticipated. Elsewhere, temperatures will range from the low 40s to near 50 degrees F (warmest near the coast).
For Tuesday, expecting dry conditions with temperatures warming regionwide by a few degrees as a shortwave ridge builds in wake of the exiting trough.
..issued at 1125 AM PDT Mon Apr 13 2026 (Tuesday night through next Sunday)
Additional warming is expected on Wednesday, but only again by a few degrees. All of this is ahead of an approaching frontal boundary that is forecast to be mostly dry. However, there are chances across far northern Napa and Sonoma counties Wednesday afternoon and evening, generally less than 25%. This said, there very well may be light precipitation as far south as the Central Coast as the front moves across the region late Wednesday evening and into early Thursday morning. Little to no measurable rainfall expected with this system.
In wake of this system, offshore winds are forecast to be strongest across the North Bay Mountains and East Bay hills Thursday and into Friday. This will be as the exiting system shifts into the Great Basin and/or Intermountain West. There still is some uncertainty with the exact track of this system, thus less confidence in the strength of offshore winds. However, widespread wetting rainfall across the region has greatly reduced fire weather concerns (at least in the short term).
Weak ridging will build in behind the aforementioned system on Friday and Saturday with temperatures returning to near seasonal averages along with dry weather. Unsettled weather looks to return late Saturday and into early next week as another mid/upper level trough drops out of the Gulf of Alaska and approaches the West Coast.
(18z TAFS) Issued at 1052 AM PDT Mon Apr 13 2026
Fair weather CU will be the name of the game today with mostly VFR and an occasional MVFR cloud drifting over the terminals. VFR through early this evening. Lower confidence on CIGS tonight, but enough residual moisture and offshore clouds will bring MVFR cigs back late tonight and early Tuesday.
Vicinity of SFO, VFR. MVFR cigs return during the Tuesday AM rush around 13-15Z. VFR returns by Tuesday afternoon.
SFO Bridge Approach, Less clouds over the Bay today.
Monterey Bay Terminals, VFR and onshore flow. MVFR cigs return tonight.
(today through Saturday) Issued at 1052 AM PDT Mon Apr 13 2026
Rain showers linger through the morning before diminishing into the afternoon. Winds stay light through early afternoon, increasing to a moderate to fresh northwesterly breeze through Wednesday. Winds build again on Thursday leading to near gale force gusts into the end of the work week. Moderate seas continue through Wednesday before rough seas arrive on Thursday.
Ca, None. PZ, Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Wednesday for Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM.
Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Tuesday for Pt Reyes to Pigeon Pt 0-10 nm.
Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for Pt Pinos to Pt Piedras Blancas 0-10 nm.
Small Craft Advisory from 3 PM Tuesday to 3 AM PDT Wednesday for Pt Pinos to Pt Piedras Blancas 0-10 nm.
