As of the Climate Prediction Center's October 8, 2026 ENSO discussion, an El Niño Advisory is in effect, and NOAA says a strong-to-very strong El Niño is likely through January–March 2027. NOAA is also careful to say that a stronger event makes El Niño-like impacts more likely, not guaranteed. El Niño winters have historically tilted Northern California toward wetter conditions, but individual seasons vary, and no outlook can tell you when or where a specific storm will hit. Watch the CPC seasonal outlooks and the National Weather Service Bay Area office for forecasts as the season unfolds.
For Marin homeowners, the roof is the part of the house that takes the first hit from every storm. Wind-driven rain, falling limbs and clogged valleys turn small weaknesses into ceiling stains, or worse. The best time to fix those weaknesses is before the rain, when roofers can schedule regular work rather than emergency calls. Here's a checklist to work through this fall.
A roofer can spot things that aren't visible from the ground: lifted or cracked shingles, worn flashing, failed sealant around vents, deteriorated underlayment at edges, and soft spots in the deck. Ask for photos of anything they flag. Our roof inspection page and the guide to inspecting your roof before the rainy season explain what a good inspection covers.
Before anyone climbs on your roof, check their license on the CSLB license check. Roofing contractors in California typically hold a C-39 Roofing classification or a General Building (B) license, per CSLB's classification list. See how to choose a roofer for more.
Most leaks don't come through the middle of a roof. They come through:
Fixing these before winter is usually far cheaper than repairing the ceiling, insulation and framing after a leak. See roof leak repair.
Marin's oaks, redwoods, eucalyptus and pines shed constantly. Debris in gutters and valleys holds water against the roof and can force water under shingles. Clean gutters before the first storm, and again mid-winter if you're under heavy tree cover. See our gutter guide and gutter repair.
Branches touching the roof scrape shingles and drop debris. Larger limbs over the house can break in storm winds. Have a qualified tree professional assess trees near the house, particularly large oaks, eucalyptus and Monterey pines. Some Marin cities and towns have tree removal permit rules, so check before major cutting.
On the first rainy day, take a flashlight into the attic. Look for wet spots on the underside of the roof deck, damp insulation, drips around vents and chimneys, or daylight showing through. Catching a leak in the first storm gives you time to fix it before the bigger ones.
Different materials age differently:
If your roof is near the end of its life, a fall inspection lets you plan a replacement on your schedule rather than during an emergency.
Many Marin homes are in wildfire-prone areas, and roofing choices matter for both rain and fire. Class A fire-rated roofing is worth discussing with your roofer if you're replacing. FIRESafe MARIN has local guidance on home hardening. Check with your local building department about any requirements that apply to your property.
Know who you'll call if a tree comes through the roof at night. Keep a tarp, rope and buckets on hand, but don't climb onto a wet or steep roof yourself. See emergency tarping. Save your insurer's claim number in your phone, and sign up for AlertMarin for emergency alerts.
Take photos of your roof and attic in good condition. If storm damage happens, "before" photos make insurance claims smoother. See roof storm damage and insurance.
Many Marin homes have rooftop solar, which adds a few considerations. Panels and racking create more roof penetrations, and the area under panels is hard to inspect. Ask your roofer whether they're comfortable working around your system, and whether any repair would require removing panels, which usually involves a solar contractor and can affect your system warranty. If your roof is near the end of its life and you're considering solar, or panels are already up, coordinate roof replacement and solar work so you don't pay to remove and reinstall panels twice. Keep your solar installer's contact information with your roofer's.
Ready to schedule an inspection or repair? Submit a request and we'll connect you with an independent licensed local roofer. Then check their license yourself on CSLB's site before work begins.
Early fall, before the rainy season, when roofers have more scheduling flexibility.
No. NOAA says a strong El Niño makes typical impacts more likely but not guaranteed.
Typically a CSLB C-39 Roofing or General Building (B) license; verify on cslb.ca.gov.
Penetrations for racking can leak if not properly flashed. Have mounts checked during inspections.
If your roof is near the end of its life, many homeowners replace it first to avoid removing panels later.
This article is general information, not legal, insurance or medical advice. Sources are linked in the text.