| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.35 | 0.36 | -0.01 |
| Feb | 0.41 | 0.42 | -0.01 |
| Mar | 0.90 | 0.94 | -0.04 |
| Apr | 1.53 | 1.50 | 0.03 |
| May | 2.21 | 2.23 | -0.02 |
| Jun | 2.70 | 2.66 | 0.04 |
| Jul | 3.22 | 3.09 | 0.13 |
| Aug | 3.08 | 2.83 | 0.25 |
| Sep | 1.20 | 1.22 | -0.02 |
| Oct | 1.42 | 1.44 | -0.02 |
| Nov | 0.52 | 0.50 | 0.02 |
| Dec | 0.49 | 0.55 | -0.06 |
18.03 | 17.74 | 0.29 |