| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.44 | 0.49 | -0.05 |
| Feb | 0.62 | 0.66 | -0.04 |
| Mar | 1.22 | 1.30 | -0.08 |
| Apr | 2.08 | 2.36 | -0.28 |
| May | 3.53 | 3.86 | -0.33 |
| Jun | 3.05 | 3.17 | -0.12 |
| Jul | 3.61 | 3.98 | -0.37 |
| Aug | 3.16 | 3.17 | -0.01 |
| Sep | 1.89 | 1.85 | 0.04 |
| Oct | 1.89 | 1.93 | -0.04 |
| Nov | 0.86 | 0.92 | -0.06 |
| Dec | 0.66 | 0.76 | -0.10 |
23.01 | 24.45 | -1.44 |