What is El Niño, and why is everyone talking about winter?
El Niño is a periodic warming of the ocean surface in the central and eastern tropical Pacific. The warmer water changes where storms form and how the jet stream runs, which shifts winter weather across North America. Forecasters track it with sea surface temperatures in a region called Niño-3.4.
NOAA’s Climate Prediction Center has an El Niño Advisory in effect. Its diagnostic discussion issued October 8, 2026 says “El Niño continues to strengthen, with a strong-to-very strong El Niño likely through January-March 2027 (remaining greater than an 83% chance),” with the Niño-3.4 index at +2.1°C. It adds that impacts consistent with El Niño are more likely with an event this strong, though not guaranteed. The next discussion is scheduled for November 12, 2026. That is why winter outlooks and snow forecasts are trending this week.
What it means for your heating bill
The U.S. Energy Information Administration (EIA) publishes a Winter Fuels Outlook each October and updates it monthly through March. The October 6, 2026 edition expects national temperatures similar to last winter, warmer in the Northeast and much colder in the West, and notes that the strong El Niño could make actual temperatures differ widely from that forecast. By main heating fuel, EIA expects:
- Electricity: a 3% rise in residential prices and slightly higher use, so bills up about 4%; up 9% in the West, where colder weather is expected.
- Natural gas (main heating fuel in 46% of U.S. homes): lower spending in the South, Midwest and Northeast on lower prices; a slight increase in the West.
- Propane: spending down 3% nationally on lower prices.
- Heating oil (about 3% of households, mostly in the Northeast): spending up 21% on higher distillate prices.
Prices differ widely by state. See residential prices for every state in our electricity rates by state and natural gas prices by state tables.
Let’s do the math: one space heater for a month
Many households add a portable electric heater when the first cold snap arrives. Most plug-in heaters draw 1,500 watts on high and about 750 on low. Energy is watts × hours ÷ 1,000, in kilowatt-hours, and cost is kWh × the price, as in the electricity cost calculator. Prices are EIA’s residential averages for August 2026, the latest month published; winter prices can differ.
- 1,500 W, 8 hours a day, 30 days: 360 kWh, $65.38 at the U.S. average 18.16¢.
- Same hours on low (750 W): 180 kWh, $32.69.
- 1,500 W for 4 hours a day: 180 kWh, $32.69.
The same 360 kWh in different states:
| Where | Price (August 2026) | 1,500 W × 8 h × 30 days |
|---|---|---|
| U.S. average | 18.16¢/kWh | $65.38 |
| Nevada | 12.72¢/kWh | $45.79 |
| Minnesota | 17.2¢/kWh | $61.92 |
| Illinois | 19.32¢/kWh | $69.55 |
| Pennsylvania | 21.77¢/kWh | $78.37 |
| Michigan | 22.99¢/kWh | $82.76 |
| New York | 28.65¢/kWh | $103.14 |
| Maine | 32.11¢/kWh | $115.60 |
| Hawaii | 47.18¢/kWh | $169.85 |
Nevada has the lowest residential price in the table EIA published for August 2026 and Hawaii the highest. Put in your own heater’s watts, your hours and your state in the electricity cost calculator, or use the price per kWh from your latest bill.
Common questions
Will heating bills go up this winter?
It depends on the fuel. In its Winter Fuels Outlook (October 6, 2026), EIA expects a 3% rise in residential electricity prices and slightly higher use to lift electric heating bills 4%, with the largest rise, 9%, in the West. It expects heating oil spending up 21%, propane spending down 3%, and lower natural gas spending in the South, Midwest and Northeast, with a slight increase in the West.
What does El Niño mean for winter in the U.S.?
El Niño is a warming of the ocean surface in the central and eastern tropical Pacific that shifts weather patterns. NOAA’s Climate Prediction Center said on October 8, 2026 that a strong-to-very strong El Niño is likely through January–March 2027 (greater than an 83% chance), and that impacts consistent with El Niño are more likely with an event this strong, though not guaranteed. EIA notes that a strong El Niño could lead to large temperature differences from its own forecast.
How much does it cost to run a space heater for a month?
Multiply watts by hours to get kilowatt-hours, then by your price. A 1,500 W heater for 8 hours a day for 30 days uses 360 kWh. At the U.S. average of 18.16¢ per kWh (August 2026) that is $65.38. On its 750 W low setting it is $32.69; at full power for 4 hours a day, $32.69.
Which state has the cheapest and most expensive electricity for a space heater?
Using EIA residential prices for August 2026, the same month of heater use costs $45.79 in Nevada (12.72¢/kWh) and $169.85 in Hawaii (47.18¢/kWh). Your own bill’s price per kWh is the best number to use.
Is FlareLodge forecasting the weather or my bill?
No. The page reports what NOAA and EIA have published and works out costs from a stated price and hours of use. The examples are estimates for comparison, not forecasts or advice.
How we calculated it
kWh = watts × hours per day × days ÷ 1,000; cost = kWh × cents per kWh ÷ 100, rounded to the cent. This is the same code that runs the electricity cost calculator. A heater with a thermostat cycles off once a room is warm, so real use is often lower than running at full power. Taxes and fixed monthly charges are not included. EIA’s percentages are quoted from the text of its outlook; they are not our forecast.
Sources and dates
- NOAA Climate Prediction Center, ENSO Diagnostic Discussion (El Niño Advisory), issued October 8, 2026. Checked November 12, 2026.
- U.S. Energy Information Administration, Winter Fuels Outlook 2026–27, published October 6, 2026. Checked November 12, 2026.
- U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A (residential price by state, August 2026), released October 23, 2026. Checked November 12, 2026.
FlareLodge is independent and is not affiliated with NOAA or EIA. This page is updated when EIA publishes a new winter forecast (next on December 8, 2026). More articles: Numbers Behind the News.