| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.46 | 4.02 | 0.44 |
| Feb | 4.56 | 3.79 | 0.77 |
| Mar | 3.45 | 3.11 | 0.34 |
| Apr | 1.77 | 1.81 | -0.04 |
| May | 1.01 | 1.02 | -0.01 |
| Jun | 0.27 | 0.27 | 0.00 |
| Jul | 0.01 | 0.00 | 0.01 |
| Aug | 0.03 | 0.03 | 0.00 |
| Sep | 0.13 | 0.12 | 0.01 |
| Oct | 1.05 | 1.02 | 0.03 |
| Nov | 2.57 | 2.06 | 0.51 |
| Dec | 4.04 | 3.89 | 0.15 |
23.35 | 21.14 | 2.21 |