| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.33 | 0.06 |
| Feb | 0.56 | 0.46 | 0.10 |
| Mar | 1.17 | 1.09 | 0.08 |
| Apr | 2.10 | 1.95 | 0.15 |
| May | 3.29 | 3.24 | 0.05 |
| Jun | 3.04 | 2.77 | 0.27 |
| Jul | 3.45 | 3.66 | -0.21 |
| Aug | 3.16 | 3.15 | 0.01 |
| Sep | 1.80 | 1.73 | 0.07 |
| Oct | 1.78 | 1.54 | 0.24 |
| Nov | 0.82 | 0.69 | 0.13 |
| Dec | 0.61 | 0.51 | 0.10 |
22.17 | 21.12 | 1.05 |