| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.62 | 0.61 | 0.01 |
| Feb | 0.65 | 0.62 | 0.03 |
| Mar | 1.43 | 1.40 | 0.03 |
| Apr | 1.95 | 1.91 | 0.04 |
| May | 3.10 | 3.10 | 0.00 |
| Jun | 3.60 | 3.43 | 0.17 |
| Jul | 3.28 | 3.12 | 0.16 |
| Aug | 3.00 | 3.06 | -0.06 |
| Sep | 1.57 | 1.52 | 0.05 |
| Oct | 2.05 | 1.96 | 0.09 |
| Nov | 0.84 | 0.78 | 0.06 |
| Dec | 0.93 | 0.90 | 0.03 |
23.02 | 22.41 | 0.61 |