April 1st Update:
(Thanks to Monday night's downpour, March 2014 ends in a tie for the 2nd wettest all-time at PDX with 7.52 inches of total moisture.)
PORTLAND -- More rain is possible before midnight tonight, but Portland International Airport will likely end March as the 3rd wettest, with 7.16 inches currently in the rain bucket.
This month has seen the most rainfall at the airport since December of 2012. The above graphic shows this month's wettest day last Friday, when 1.69 inches set the all-time record for daily March rainfall at PDX. Notice the all-time record for March rain was set two years ago when 7.89 inches fell.
I have written several articles the past few years talking about an apparent climate shift in Portland's rainy season.
The change I am noticing is a shift of our wettest months moving from winter into spring. Notice the March rainfall average over the last 10 years is 4.36 inches, well above the 1981-2000 average of 3.68 inches.
March, on average, is Portland's 4th wettest month. But current trends open the possibility of March averaging as much rainfall as December or January in the coming decades. For now the thought is pure speculation.
Spring weather outlooks from the National Weather Service show Portland to be warm and dry when compared to normal for the months of April, May and June. However, forecast models show above normal April rainfall through the first two weeks of the month.
Meteorologist Rod Hill, follow me @