PORTLAND -- Warm temperatures in Portland Friday made it the hottest day of the year so far.
It reached 91 degrees in the Portland metro area, according to KGW Meteorologist Rod Hill.
On Sunday, temps. will get even hotter hitting 90 for the first this year, KGW meteorologist Nick Allard said.
The string of 90 degree days will continue through Tuesday, he said.
"Yesterday was the transition day," Allard said. "Today is the start to the real heat. In fact, if we get above 85° today, it will be the hottest day of the year."
Doctors say to go out and enjoy the weather, but just don't over do it.
"With prolonged hot weather, what I tend to worry about is people who live at home and don't have air conditioners and might be older and might not be as active," said Dr. Ritu Sahni with Providence Health & Services.
TriMet anticipates having to slow down MAX trains due to the warm weather.
"In the heat, our overhead wires can sag and the rails themselves can expand," said Roberta Altstadt with TriMet.
Portland averages 13 days each year with temperatures of 90 degrees or hotter, according to KGW meteorologist Rod Hill, who provided these statistics.
Here is a list of the first 90 degree days over the past 10 years:
Year 1st 90-degree day # of 90-degree days
2003 June 4 22
2004 June 17 12
2005 May 27 15
2006 May 15 21
2007 May 30 9
2008 May 16 15
2009 June 3 24 (all time record)
2010 July 7 11
2011 Aug. 20 7
2012 Aug. 4 11 days
All years above the average number of 13 90-degree days saw their first hot day before June 10th. If this summer follows the pattern of the last 10 years, PDX will likely see 12 or less 90-degree or hotter days this summer.