| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.57 | 0.59 | -0.02 |
| Feb | 0.61 | 0.63 | -0.02 |
| Mar | 1.40 | 1.33 | 0.07 |
| Apr | 1.95 | 1.86 | 0.09 |
| May | 3.07 | 3.13 | -0.06 |
| Jun | 3.51 | 3.33 | 0.18 |
| Jul | 3.26 | 3.03 | 0.23 |
| Aug | 3.05 | 3.03 | 0.02 |
| Sep | 1.49 | 1.45 | 0.04 |
| Oct | 1.99 | 1.93 | 0.06 |
| Nov | 0.79 | 0.77 | 0.02 |
| Dec | 0.88 | 0.90 | -0.02 |
22.57 | 21.98 | 0.59 |