% Probability of Indicated Temperature or Lower on or After Date

  90% 75% 50% 25% 10%
36 May 2 May 13 May 23 June 3 June 9
32 April 17 April 29 May 8 May 14 May 23
28 April 7 April 9 April 17 April 28 May 9
24 March 6 March 25 April 3 April 14 April 16
20 Feb. 14 March 1 March 19 April 1 April 5