What is NOAA forecasting?
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)
How wet has San Francisco been so far?
| NWS station | Rain since July 1 | Normal to date | Percent of normal |
|---|---|---|---|
| San Francisco Downtown | 0.42 in. | 1.98 in. | 21% |
Source: NWS San Francisco Bay Area, Area Precipitation Information product, issued 2:15 AM PST November 11, 2026 (preliminary data as of midnight).
Can a San Francisco roof be replaced in the rainy season?
Yes, in pieces. Roofers strip and dry-in one section at a time and watch the forecast. Flat roofs are often faster to dry-in than steep, cut-up Victorian roofs. City permit data shows the trade slows in winter: over 2016–2025, December averaged the fewest reroof permits of the year (DataSF).
If I wait until spring, what should I do now?
- Clear drains and scuppers before each storm.
- Ask a roofer to seal parapet caps and failed flashing.
- Photograph stains so you can show what changed.
Will insurance pay if El Niño damages an old roof?
Policies usually cover sudden damage, not wear. See our Bay Area guide to El Niño roof damage and insurance.
Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.
Get a free replacement quoteFrequently asked questions
Is it safe to tear off a roof between storms?
Yes, if the crew dries in each section the same day and watches the forecast.
Does El Niño guarantee storms in San Francisco?
No. NOAA says El Niño impacts are more likely, not guaranteed.
What fails first on a San Francisco roof in heavy rain?
Clogged drains and scuppers, parapet caps and the joint between flat and pitched sections.
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.