What NOAA says
In its ENSO diagnostic discussion issued October 8, 2026, NOAA's Climate Prediction Center kept an El Niño Advisory in effect and said a strong-to-very strong El Niño is likely through January–March 2027. CPC also cautions that with an event this strong, the chances of impacts consistent with El Niño are larger, "though not guaranteed." Its next monthly discussion was scheduled for November 12, 2026. (CPC discussion)
Rain near Marin so far
The NWS Bay Area precipitation product does not list a Marin County station. The nearest stations in that same November 11 report are San Francisco Downtown, just south of the Golden Gate, and Santa Rosa, just north of the county line:
| NWS station | Rain since July 1 | Normal to date | Percent of normal |
|---|---|---|---|
| San Francisco Downtown | 0.42 in. | 1.98 in. | 21% |
| Santa Rosa | 0.95 in. | 2.77 in. | 34% |
Source: NWS San Francisco Bay Area, Area Precipitation Information product, issued 2:15 AM PST November 11, 2026 (preliminary data as of midnight).
Where Marin roofs fail in big storms
Marin storms are hardest on roofs under trees and on exposed hillsides: redwood and oak litter packs valleys and gutters in Mill Valley, Fairfax and the San Geronimo Valley, and wind-driven rain tests ridge lines and flashing on homes above the fog in the Ross Valley and on the Tiburon and Sausalito hills. Near the bay and the ocean, salt air adds corrosion at fasteners and flashing.
Marin's advantage: fast permits
Because most Marin reroof permits issue quickly, a roofer can often move on a dry forecast without waiting for plan review.
Waiting?
Clear valleys and gutters before each storm and photograph any stains.
Insurance
See our Bay Area El Niño insurance guide.
Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.
Get a free replacement quoteFrequently asked questions
Why isn't there Marin rainfall data here?
The NWS Bay Area precipitation product doesn't list a Marin County station.
Can a roofer start quickly in a dry spell?
Often. Most Marin reroof permits are issued instantly or within a few days.
Do redwood needles make storm leaks worse?
Packed needles in valleys and gutters back water up under shingles.
Sources
Sources reviewed November 11, 2026. Figures are published estimates and official fees, not quotes. Confirm prices, permits and requirements with your contractor and building department. This page is general information, not legal or insurance advice.