| |
% Probability of Indicated Temperature or Lower on or After Date |
|||||
| 90% | 75% | 50% | 25% | 10% | |
| 32 | April 17 | April 29 | May 8 | May 14 | May 23 |
| 30 | April 9 | April 15 | April 25 | May 11 | May 13 |
| 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 |