NOAA Forecasted Wetter Winter Amid El Niño Conditions

A new seasonal outlook indicates a strong El Niño will bring higher precipitation to large parts of the United States.

Updated on Sept. 30, 2026 in Forecasts

Bold vector editorial illustration of a basement floor slab corner with a drain and dehumidifier, representing home moisture prevention. — NOAA's winter climate outlook predicts a strong El Niño, bringing increased precipitation and potential moisture risks to many U.S. homes. AI Illustration. Upload story photo >

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Is now a good time to prioritize basement infrastructure assessments before installing new home equipment?

NOAA has released a seasonal climate outlook projecting a 90 percent chance of a very strong El Niño event through the coming winter. This shift is expected to deliver above-normal precipitation across the southern and central United States as well as the Mid-Atlantic region.

Why it matters

The forecasted increase in precipitation may exacerbate basement moisture issues for homeowners, a concern that has prompted new planning guidance for those installing exercise equipment. Experts suggest that managing humidity and drainage is critical during this period to prevent damage to home fitness infrastructure.

NOAA projects that some areas in the Southeast face a greater than 60 percent probability of above-normal precipitation this season. This follows agency guidance to monitor indoor relative humidity within a 30 to 50 percent range and stay below the 4.0 pCi/L EPA action threshold for radon.

The players

National Oceanic and Atmospheric Administration

The National Oceanic and Atmospheric Administration is a federal scientific agency that monitors oceanic and atmospheric conditions.

Environmental Protection Agency

The Environmental Protection Agency is a United States federal government agency responsible for creating and enforcing environmental regulations.

Home Gym Specs

Home Gym Specs is an organization that provides guidance on planning and equipment installation for residential fitness spaces.

The details

Homeowners are advised to evaluate moisture levels, drainage, and air quality before installing home gym equipment, as rubber flooring can trap moisture against floor slabs. Planning should also account for structural constraints like sump systems, columns, and beams that may reduce usable space.

September 17, 2026: NOAA released its seasonal climate outlook.
September 29, 2026: Home Gym Specs published basement planning advice.
October through December 2026: The window for NOAA's precipitation projections.
Fall and winter 2026-27: The expected duration of the strengthening El Niño event.

Seasonal Patterns

This outlook reflects the impact of cyclical climate drivers, following trends established by the National Weather Service's Air Quality Index thresholds. By tracking these patterns, the agency provides essential data for long-term planning regarding indoor environments.

Homeowners in affected regions should inspect basement sump systems and moisture barriers to mitigate potential flood risks during the wetter months. Ensuring your indoor environment stays within recommended humidity and radon limits is essential for maintaining safe living spaces.

The takeaway

Proactive assessment of your home's structural and moisture defenses is the best strategy for weathering the projected increase in precipitation. Taking these precautions now can protect both your physical health and your investment in home fitness equipment.