| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.34 | 0.36 | -0.02 |
| Feb | 0.40 | 0.41 | -0.01 |
| Mar | 0.90 | 0.93 | -0.03 |
| Apr | 1.51 | 1.45 | 0.06 |
| May | 2.21 | 2.17 | 0.04 |
| Jun | 2.69 | 2.62 | 0.07 |
| Jul | 3.20 | 3.08 | 0.12 |
| Aug | 3.07 | 2.82 | 0.25 |
| Sep | 1.19 | 1.20 | -0.01 |
| Oct | 1.41 | 1.43 | -0.02 |
| Nov | 0.52 | 0.49 | 0.03 |
| Dec | 0.50 | 0.56 | -0.06 |
17.94 | 17.52 | 0.42 |