| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.74 | 0.84 | -0.10 |
| Feb | 0.77 | 0.87 | -0.10 |
| Mar | 1.55 | 1.54 | 0.01 |
| Apr | 2.97 | 2.91 | 0.06 |
| May | 4.21 | 4.22 | -0.01 |
| Jun | 4.83 | 4.48 | 0.35 |
| Jul | 4.05 | 4.04 | 0.01 |
| Aug | 4.28 | 4.42 | -0.14 |
| Sep | 3.37 | 3.22 | 0.15 |
| Oct | 2.57 | 2.52 | 0.05 |
| Nov | 1.51 | 1.54 | -0.03 |
| Dec | 1.06 | 1.19 | -0.13 |
31.91 | 31.79 | 0.12 |