| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.57 | 0.53 | 0.04 |
| Feb | 0.52 | 0.48 | 0.04 |
| Mar | 1.28 | 1.33 | -0.05 |
| Apr | 1.84 | 1.81 | 0.03 |
| May | 2.74 | 2.69 | 0.05 |
| Jun | 3.45 | 3.28 | 0.17 |
| Jul | 3.11 | 2.98 | 0.13 |
| Aug | 2.74 | 2.93 | -0.19 |
| Sep | 1.43 | 1.32 | 0.11 |
| Oct | 1.83 | 1.81 | 0.02 |
| Nov | 0.67 | 0.69 | -0.02 |
| Dec | 0.84 | 0.81 | 0.03 |
21.02 | 20.66 | 0.36 |