| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.50 | 0.53 | -0.03 |
| Feb | 0.66 | 0.70 | -0.04 |
| Mar | 1.30 | 1.35 | -0.05 |
| Apr | 1.82 | 1.84 | -0.02 |
| May | 3.16 | 3.22 | -0.06 |
| Jun | 3.06 | 3.15 | -0.09 |
| Jul | 3.36 | 3.66 | -0.30 |
| Aug | 2.91 | 3.10 | -0.19 |
| Sep | 1.74 | 1.71 | 0.03 |
| Oct | 1.62 | 1.68 | -0.06 |
| Nov | 0.70 | 0.75 | -0.05 |
| Dec | 0.72 | 0.83 | -0.11 |
21.55 | 22.52 | -0.97 |