Mid‑Late January Is Climatologically Coldest Across Much Of U.S.
Mid‑Late January Is Climatologically Coldest Across Much Of U.S.
US · Published Jan 12, 2026
Mid to late January is typically the coldest time of year across much of the U.S., based on 30-year averages.
Eastern states and the Plains often hit their seasonal lows in late January due to Arctic air incursions and snow cover.
Climatological data helps meteorologists identify weather trends and predict future conditions for winter preparation.
Mid to late January is coldest period
January is generally recognized as a cold month, but climatological data reveals that mid to late January is typically the coldest period across much of the United States. This is particularly true for the Midwest, South, and East, according to 30-year averages. During this time, the average daily low temperatures reach their annual minimum before gradually increasing as February approaches.
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