| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.49 | 0.52 | -0.03 |
| Feb | 0.53 | 0.57 | -0.04 |
| Mar | 0.89 | 0.91 | -0.02 |
| Apr | 1.32 | 1.26 | 0.06 |
| May | 3.09 | 3.23 | -0.14 |
| Jun | 3.65 | 3.86 | -0.21 |
| Jul | 3.33 | 3.21 | 0.12 |
| Aug | 2.63 | 2.52 | 0.11 |
| Sep | 2.42 | 2.65 | -0.23 |
| Oct | 1.89 | 1.92 | -0.03 |
| Nov | 0.66 | 0.66 | 0.00 |
| Dec | 0.66 | 0.70 | -0.04 |
21.56 | 22.01 | -0.45 |