| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.40 | 0.38 | 0.02 |
| Feb | 0.35 | 0.32 | 0.03 |
| Mar | 0.97 | 0.95 | 0.02 |
| Apr | 1.32 | 1.35 | -0.03 |
| May | 1.88 | 1.95 | -0.07 |
| Jun | 2.60 | 2.51 | 0.09 |
| Jul | 2.85 | 2.94 | -0.09 |
| Aug | 3.01 | 2.97 | 0.04 |
| Sep | 1.28 | 1.37 | -0.09 |
| Oct | 1.45 | 1.52 | -0.07 |
| Nov | 0.48 | 0.46 | 0.02 |
| Dec | 0.57 | 0.56 | 0.01 |
17.16 | 17.28 | -0.12 |