| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.78 | 0.00 |
| Feb | 0.85 | 0.83 | 0.02 |
| Mar | 1.49 | 1.39 | 0.10 |
| Apr | 2.73 | 2.81 | -0.08 |
| May | 4.06 | 4.00 | 0.06 |
| Jun | 4.33 | 4.21 | 0.12 |
| Jul | 4.33 | 4.21 | 0.12 |
| Aug | 4.05 | 3.93 | 0.12 |
| Sep | 3.31 | 3.48 | -0.17 |
| Oct | 2.95 | 3.02 | -0.07 |
| Nov | 1.65 | 1.54 | 0.11 |
| Dec | 1.14 | 1.18 | -0.04 |
31.67 | 31.38 | 0.29 |