the.com/january thaw

Winter's fake exit, a brief mercy before it remembers its job.

means A brief stretch of unusually mild, often thaw-inducing weather that interrupts the dead of winter, typically in late January.

from The term is a straightforward descriptive coinage from American and Canadian English, not a borrowing or a myth — farmers, almanac-makers, and later climatologists noticed the pattern of a recurring midwinter warm spell and simply named what they saw. Some folklore ties it to specific dates (the 'January thaw' has long been linked with a few days around the 20th-25th), and weather records do show a slight statistical bump in mild days then, but meteorologists remain divided on whether it's a real cyclical phenomenon or just noise in the data that got folk-canonized once it had a name.

origin
named by 19th century New England farmers and sailors
timing
tends to hit around january 20 to 26
cause
shifting jet stream, not actual seasonal change
cruelty
melts snow just enough to refreeze into ice
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