| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.41 | 0.40 | 0.01 |
| Feb | 0.50 | 0.53 | -0.03 |
| Mar | 0.95 | 0.98 | -0.03 |
| Apr | 2.02 | 2.09 | -0.07 |
| May | 2.87 | 2.99 | -0.12 |
| Jun | 3.03 | 3.07 | -0.04 |
| Jul | 3.30 | 3.21 | 0.09 |
| Aug | 2.88 | 2.86 | 0.02 |
| Sep | 1.46 | 1.48 | -0.02 |
| Oct | 1.48 | 1.52 | -0.04 |
| Nov | 0.68 | 0.66 | 0.02 |
| Dec | 0.50 | 0.51 | -0.01 |
20.08 | 20.30 | -0.22 |