PORTLAND, Ore. (KOIN) — Happy New Year! Saturday marks the beginning of the 2016-2017 water year.
The water year, which begins October 1, coincides with what is typically the beginning of rainy season in the Pacific Northwest. Average rainfall doubles from September (1.47 inches) to October (3 inches) in Portland.
In the 76 years since records began, 2015-2016 was the 5th wettest water year. December and January made that possible. December 2015 was the wettest month on record in Portland — 15.24 inches of rain fell (9.75 inches above normal). There were only 2 dry days during the month.
The wet weather continued into January, as PDX picked up 7.23 inches of rain — more than 2 inches above average.
PDX’s annual average is 36.03 inches of rain. The wettest water year on record happened 20 years ago, 1996-97, when the airport picked up a whopping 58.67 inches of rain. The driest year on record was 2001-01 with just 22.99 inches.
Records have been kept since 1940 at PDX.