| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.41 | 3.55 | -0.14 |
| Feb | 2.70 | 2.82 | -0.12 |
| Mar | 3.67 | 3.63 | 0.04 |
| Apr | 4.92 | 5.04 | -0.12 |
| May | 5.02 | 5.22 | -0.20 |
| Jun | 5.04 | 5.39 | -0.35 |
| Jul | 4.50 | 4.61 | -0.11 |
| Aug | 3.42 | 3.32 | 0.10 |
| Sep | 3.44 | 3.63 | -0.19 |
| Oct | 3.56 | 3.67 | -0.11 |
| Nov | 3.84 | 3.93 | -0.09 |
| Dec | 3.32 | 3.46 | -0.14 |
46.84 | 48.27 | -1.43 |