Summary
A Super El Niño could make winter 2026–27 warmer across much of the northern U.S. and wetter across much of the South, while fall could also bring unusual regional weather patterns. NOAA says there is a greater than 90% chance of a very strong El Niño during fall and winter, but the exact weather will vary by region.
Key Takeaways
- NOAA says there is a greater than 90% chance of a very strong El Niño during fall and winter 2026–27.
- The northern U.S. generally favors a warmer winter, while much of the southern U.S. favors wetter conditions.
- The Pacific Northwest could be warmer and drier, while California and the Southwest could see more precipitation.
- A milder winter can still bring dangerous cold, snowstorms, ice, and other disruptive weather.
- Seasonal forecasts show what is more likely, not exactly what weather any one location will experience.
A Super El Niño Could Shake Up Your Usual Weather
NOAA now puts the odds of historic El Niño strength at 75% during October through December, which would exceed the strength of previous events dating back to 1950. [1]
Events this powerful are often called Super El Niños.
But that doesn't necessarily mean worse weather. It means the weather may not behave the way you're used to.
El Niño is marked by unusually warm water across the central and eastern tropical Pacific. That warmth can change atmospheric circulation, including the jet stream that helps steer storms across the United States.
During a typical El Niño winter, the southern branch of the jet stream strengthens and helps steer storms across the southern U.S. That generally favors warmer conditions across parts of the North and wetter conditions across much of the South. [2]
This year has another wrinkle.
AccuWeather reports that unusually warm water in the north-central Pacific and off the Mexican coast could affect the placement and strength of storm tracks. [3]
But even with an El Niño this strong, NOAA says typical El Niño impacts become more likely—not guaranteed. [1]
What Could Super El Niño Mean This Fall?
El Niño's influence typically becomes more pronounced in winter, but some changes could show up this fall.
The Pacific Northwest, Northern Rockies and Upper Midwest could have a warmer and drier fall, delaying the arrival of the cooler weather people in those regions normally expect.
Meanwhile, a southward shift in the Pacific jet stream could bring more rain to portions of the Southwest and Southern Plains.
The Gulf Coast and Southeast could also turn wetter and stormier, while heavier rainfall could raise flooding concerns in some areas. [4]
We're already seeing another El Niño effect in the Atlantic. Strong El Niños tend to increase wind shear, which can make it more difficult for tropical systems to organize and strengthen. [5]
What Could Super El Niño Mean This Winter?
Winter is when the regional differences could become much clearer. The West has a strong north-south divide, and snowfall won't necessarily follow the temperature map. Here's how the outlook changes across the country.
Pacific Northwest: Warmer and Drier Than Usual
The Pacific Northwest generally leans warmer during a strong El Niño winter, with drier conditions also possible across parts of the northern tier. [6]
That combination would be less favorable for mountain snow and snowpack.
California and the Southwest: More Storms Could Head South
California and the Southwest could see a much wetter pattern.
El Niño's stronger southern storm track typically favors wetter conditions from parts of California and the Desert Southwest eastward across the southern United States. [2]
That could bring much-needed precipitation to dry areas, but heavy rain can also create flooding when too much arrives too quickly. Higher elevations could also see more snow when temperatures are cold enough.
Rocky Mountain West: Location Matters
The Rockies don't fit neatly into one forecast.
The northern Rockies lean warmer and drier, while the southern Rockies sit closer to the wetter southern storm track. [6]
That north-south split makes location especially important in the Mountain West.
Northern Plains and Upper Midwest: Milder Doesn't Mean Storm-Free
One of the stronger El Niño signals is warmer weather across the Northern Plains and Upper Midwest, where an unusually mild winter is possible. [6]
Warmer temperatures could also make snowpack less persistent in some areas.
But warmer on average does not mean warm every day.
A mild winter can still include significant snowstorms or periods of dangerous cold. Individual winter storms depend much more on the weather pattern in place when they develop than on the seasonal average. [7]
Midwest and Great Lakes: A Milder Winter with a Snow Twist
Around the Great Lakes, warmer conditions create an interesting wrinkle.
If the lakes remain ice-free longer, cold air passing over relatively warm open water can pick up moisture.
When the right conditions arrive, that can contribute to heavier lake-effect snow. [7]
Northeast and Mid-Atlantic: Warmer, But Snow Is Still Possible
The Northeast also generally tilts warmer during a strong El Niño, and strong El Niño winters have tended to produce less snow on average in parts of the region. [6]
Southern Plains: More Moisture Could Mean Rain, Ice or Snow
Texas, Oklahoma, and surrounding areas could see a more active winter.
The southern storm track favors increased precipitation across this part of the country, which could provide relief to areas dealing with drought. [6]
If cold air pushes south while that moisture is in place, snow, sleet or freezing rain become possible. [6]
Southeast and Florida: A Wetter Winter
Florida offers perhaps the clearest example of how El Niño can change what people normally expect.
Winter is typically Florida's dry season. This winter could be wetter than usual. [3]
The broader Southeast also has increased odds of wetter conditions, and an active southern storm track can bring heavy rain and severe thunderstorms.
If enough cold air reaches farther south, snow or ice can also become possible in parts of the region. [6]
How to Prepare for a Super El Niño Winter
Seasonal forecasts tell us what's more likely over several months. They can't tell us exactly when disruptive weather will arrive or what form it will take.
- Power can go out even during a milder winter.
- One major storm can make roads dangerous even during a drier season.
- A wetter winter doesn't tell you when rain, snow, or ice will arrive.
So prepare for disruption, not a particular forecast.
That means being ready if the power goes out, roads become dangerous, or you have to stay home for several days.
- Keep the lights on and essential devices powered. A rechargeable headlamp keeps your hands free, while a USB Emergency Lantern & Power Bank gives you room light and backup power for small devices. For longer outages, a solar generator can provide another level of backup power when the grid is down.
- Have a way to stay warm and cook without electricity. The VESTA Self-Powered Indoor Space Heater & Stove does both. It runs on InstaFire Canned Heat+, requires no electricity, and can help warm a contained space up to 200 square feet. Just make sure you use it with adequate ventilation.
- Stock food before you need it. If weather makes roads unsafe or knocks out power, having emergency food at home means you don't have to make a last-minute trip to the store.
- Don't forget your vehicle. Winter weather isn't the only thing that can leave you stranded. Flooding, fallen trees, road closures, or even hours of stopped traffic can do it. The Survival Car Kit puts emergency water, food, lighting, tools, a folding shovel, and other survival gear in one vehicle-ready kit.
We don't know exactly what Super El Niño will bring this fall and winter.
That's exactly why it's worth preparing now.
Where are you least prepared for an unpredictable winter? Let us know below.
In liberty,
Elizabeth Anderson
Preparedness Advisor, My Patriot Supply
Sources
[1] NOAA Climate Prediction Center.ENSO Diagnostic Discussion. National Weather Service, September 10, 2026. https://cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/ensodisc.shtml
[2] The Weather Channel.Super El Niño Could Flip Winter Temperatures Upside Down in the US. The Weather Channel, August 19, 2026. https://weather.com/2026/08/18/storms/winter/super-el-nino-could-flip-winter-temperatures-upside-down-in-the-us
[3] AccuWeather.The 2026 El Niño Could Become the Strongest in a Lifetime. AccuWeather, August 20, 2026. https://www.accuweather.com/en/climate/the-2026-el-niño-could-become-the-strongest-in-a-lifetime/1924444
[4] FOX Weather.Strengthening El Niño Could Shake Up Fall Weather Across the US. FOX Weather, August 31, 2026. https://www.foxweather.com/weather-news/looking-ahead-what-impacts-el-nino-fall
[5] The Weather Channel.Potentially Historic Super El Niño: What Does It Mean for Your Weather? The Weather Channel, September 10, 2026. https://weather.com/2026/09/10/news/weather/latest-super-el-nino-september
[6] CNN.El Niño Will Upend Winter Weather in the US. Here's Who Will Feel It the Most. CNN, August 20, 2026. https://edition.cnn.com/2026/08/20/weather/super-el-nino-us-winter-forecast-climate
