| |
% Probability of Indicated Temperature or Lower on or After Date |
|||||
| 90% | 75% | 50% | 25% | 10% | |
| 32 | May 2 | May 9 | May 18 | May 24 | May 30 |
| 30 | April 20 | May 1 | May 8 | May 20 | May 27 |
| 28 | April 16 | April 21 | May 2 | May 11 | May 22 |
| 24 | March 28 | April 10 | April 18 | April 23 | May 1 |
| 20 | March 4 | March 12 | March 29 | April 7 | April 20 |