The National Weather Service says last month was the warmest January on record in Seattle, an average of 47 degrees.
That was about a half-degree warmer than the old record set in 2006. Seattle records go back to 1891.
Forecasters say the average daily high at Sea-Tac Airport was nearly 52 degrees, about 6 degrees above normal. The average low was the month was about 43, about 7 degrees above normal.
Olympia had its second-warmest January, averaging nearly 44 degrees.
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Bellingham had its warmest January on record, averaging 45 degrees.