Before the First Rain: A Napa Valley Fall Home Checklist

Practical steps for gutters, drainage, planters, entry lighting, and a warmer interior as the season turns.

The evenings are arriving earlier and the cooler, wetter months are on their way. The best time to get a home ready for rain is before it starts. Much of it is simple upkeep. Larger projects, such as roof repairs, are best handled by a qualified professional.

Here is a practical look at fall home prep in Napa Valley, informed by local agencies and trusted public sources.

Gutters and Drainage

Start at the Roofline

Napa County's Flood and Storm Resources page puts the basics first: clear drains, rain gutters, and downspouts of debris, inspect your roof for any signs of damage or needed repairs, and trim trees and landscaping so branches are clear of your structure and clear of overhead power lines. For any concerns about branches near power lines, the County directs residents to contact PG&E. For hillside properties, the County also advises stabilizing slopes to prevent mud and landslides.

Once the gutters are clear, think about where the water goes next. In Catch the Rain, a November 2025 column, Carol Glaser of the UC Master Gardeners of Napa County described the guiding principle as "slow, spread and sink," keeping rainwater on your property so it can nourish the soil. Her suggestions include downspout extensions that direct water toward a rain garden, along with swales, permeable walkways, and rain barrels. She recommends consulting the Napa Resource Conservation District and the City of Napa Water Department for guidance on building these systems.

One detail City of Napa homeowners should know: according to the City's Drainage Program, the City does not maintain privately owned drainage inlets or other private drainage infrastructure. If you are unsure whether drainage infrastructure is publicly or privately owned, contact the City for guidance. Drainage issues can be reported through the City of Napa Service Center or the drainage hotline at 707.257.9520.

Yard Cleanup

A Fresh Start for Fall Cleanup

Fall cleanup does double duty as flood prevention. Napa Recycling notes that grass, leaves, and other yard waste washed down storm drains can clog them and contribute to flooding, and that storm drains run unfiltered into local waterways. Their advice is simple: sweep, rather than rinse, your driveway, patio, and walkways, and compost what you rake, mow, or clip. As they put it, "Only rain goes down the storm drain."

Some of those leaves can stay close to home. A September 2022 UC Master Gardeners of Napa County column points out that leaves make good mulch, and that with a compost pile and a heap of dried leaves, you can keep your soil healthy without buying lots of additives.

Curb Appeal

Planters and the Front Walk

Photo: Eric Shephard Architects via Houzz

Fall is planting season, not just cleanup season. The same Master Gardeners column recommends planting calendula, pansy, and snapdragon seeds in the fall, and notes that most bulbs should go in during September and October. That makes right now a natural moment to refresh front porch planters and the beds along the walk.

When you mulch around trees, the same column advises keeping mulch around the roots but not next to the bark.

Before the first big storm, take a look at the patio, too. Napa County recommends securing outdoor furniture and other loose items so they do not cause damage during heavy winds.

Entry Lighting

Light the Way In

Photos: Heirloom Landscapes and CB Architecture + Design via Houzz

With evenings arriving earlier, the front entry does more work in fall and winter. It is a good time to check every exterior fixture along the walk, steps, and porch, and to replace bulbs that are dim or out.

The U.S. Energy Information Administration notes that LEDs use up to 90 percent less energy and last up to 25 times longer than incandescent bulbs. Consider timers or motion sensors to help keep outdoor lights on when they are useful. A warm, well lit entry helps a home feel welcoming on a fall afternoon.

Interior Comfort

Inside, Comfort That Works

A cozy home in the wet months starts with keeping warm air in. PG&E's winter energy saving tips recommend caulking gaps and cracks around drafty doorframes and windows, noting that sealing air leaks can save up to 20 percent on heating and cooling costs. PG&E also suggests closing curtains, shades, and blinds at night, cleaning or replacing air filters regularly, and reversing ceiling fans in winter to push warm air near the ceiling back down into the room.

On the thermostat, PG&E says that for every degree you lower it during the winter, you can save one percent annually on your bill.

One small design move worth making now: give the entry a place for wet weather. A sturdy mat, a spot for umbrellas, hooks for coats, and a tray for boots help keep rain at the door and make the transition from outdoors to indoors feel intentional.

Storm Readiness

Ready for Storm Days

The City of Napa's Sandbag Program offers free sandbags and sand to City residents and business owners on the first Saturday of each month, November through April, at 720 Jackson Street from 8 a.m. to 4 p.m. It is self serve, so bring your own gloves and shovel, and there is a limit of 10 bags per household. The City also distributes free sandbags when the National Weather Service issues flood or flash flood watches for the Napa River and its tributaries. Outside the City, Ready Napa County maintains a list of sandbag station locations across the county, and notes that sites generally open when extreme rain events are expected.

Napa County also encourages residents to sign up for Alert Napa County notifications, make an emergency plan, build a disaster supply kit, and keep pet ID tags up to date. From PG&E's severe weather safety guidance: keep a battery operated flashlight and radio within easy reach, assume any downed power line is energized and stay away from it, and hire a licensed electrician to install a generator.