U.S. Braces for a Hotter and Drier Fall as La Niña Looms

Wed, 11 Sep 2024 20:31:58 GMT

If predictions hold true, this fall could be a hotter and drier season across much of the U.S. According to the Climate Prediction Center, a division of the National Oceanic and Atmospheric Administration (NOAA), unusually warm days are still ahead for parts of the country during the meteorological fall, which spans from Sept. 1 to Nov. 30.

Seasonal Temperature Outlook

(NOAA)

The temperature outlook for September through November 2024 favors a warmer-than-normal season, with the greatest probabilities — exceeding 60% — expected in New England and parts of the Southwest. The West, particularly Arizona, Colorado, New Mexico and Utah, is likely to experience an unusually warm September. On the opposite coast, Florida and much of New England are also trending warmer than normal. Conversely, while southwestern Alaska may see below-normal temperatures, northern Alaska is more likely to experience above-normal warmth.

La Niña, known for bringing dry, warmer-than-average conditions to the southern half of the country, is favored to develop during the September to November period, with a 66% chance of formation. Once established, there’s a 70% chance it will persist through the winter of 2024-2025. Though La Niña hasn’t officially started, signs of its arrival are reflected in NOAA’s fall weather predictions.

Seasonal Precipitation Outlook

(NOAA)

As the weather pattern strengthens in the coming months, the U.S. might see an extended period of warmth and dryness, particularly in regions already feeling the heat.

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U.S. Braces for a Hotter and Drier Fall as La Niña Looms