The United States will probably experience several months of La Niña, the weather pattern that brings unexpected winter weather through Oklahoma.

Climate meteorologists have forecast a 71% chance of La Niña developing between October and December 2025.

La Niña, along with its "brother" weather pattern El Niño, are natural patterns of Pacific Ocean temperature changes that cause wide-reaching impacts across North America.

What is La Niña?

La Niña is part of the weather phenomenon known as El Niño Southern Oscillation, which is the changing of surface temperatures in the Pacific Ocean, according to the Farmers Almanac . During El Niño conditions, sea temperatures are unusually warmer near the Equator.

La Niña has the opposite effect, with unusually cold waters in the same

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