| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.67 | 0.53 | 0.14 |
| Feb | 0.59 | 0.48 | 0.11 |
| Mar | 0.86 | 0.74 | 0.12 |
| Apr | 1.12 | 1.02 | 0.10 |
| May | 2.98 | 3.03 | -0.05 |
| Jun | 3.75 | 3.72 | 0.03 |
| Jul | 3.23 | 3.35 | -0.12 |
| Aug | 2.55 | 2.67 | -0.12 |
| Sep | 2.27 | 2.39 | -0.12 |
| Oct | 1.67 | 1.68 | -0.01 |
| Nov | 0.90 | 0.89 | 0.01 |
| Dec | 0.82 | 0.70 | 0.12 |
21.41 | 21.20 | 0.21 |