The 3 p.m. temperature at Reagan National Airport – D.C.’s official weather observing station – sprung to 90 degrees – the first occurrence this calendar year.
A few facts pertaining to our history of first 90-degree temperatures:
* Since 1872, the average date of our first 90-degree reading is May 18 (including reporting locations in the District and at Reagan National); the earliest first 90 occurred March 22, 1907 and the latest first 90 was July 12, 1979.
* Since 2000, the average date of our first 90-degree reading is May 16, the earliest occurring April 6, 2010 and latest June 24, 2003.
* Last year (2013), we hit 90 for the first time April 10.
Historically, Washington, D.C. averages 36 90+ days per calendar year. How many 90+ days do we expect this year? Stay tuned for our summer outlook coming later this month.