| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.39 | 0.00 |
| Feb | 0.48 | 0.49 | -0.01 |
| Mar | 0.93 | 0.97 | -0.04 |
| Apr | 1.71 | 1.63 | 0.08 |
| May | 2.29 | 2.30 | -0.01 |
| Jun | 2.69 | 2.73 | -0.04 |
| Jul | 3.26 | 3.26 | 0.00 |
| Aug | 3.12 | 2.78 | 0.34 |
| Sep | 1.25 | 1.15 | 0.10 |
| Oct | 1.42 | 1.53 | -0.11 |
| Nov | 0.56 | 0.52 | 0.04 |
| Dec | 0.49 | 0.53 | -0.04 |
18.59 | 18.28 | 0.31 |