| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.45 | -0.06 |
| Feb | 0.42 | 0.45 | -0.03 |
| Mar | 0.64 | 0.72 | -0.08 |
| Apr | 1.08 | 1.08 | 0.00 |
| May | 2.51 | 2.68 | -0.17 |
| Jun | 3.46 | 3.63 | -0.17 |
| Jul | 3.20 | 3.27 | -0.07 |
| Aug | 2.23 | 2.43 | -0.20 |
| Sep | 1.91 | 1.98 | -0.07 |
| Oct | 1.38 | 1.52 | -0.14 |
| Nov | 0.57 | 0.68 | -0.11 |
| Dec | 0.54 | 0.66 | -0.12 |
18.33 | 19.55 | -1.22 |