| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.48 | 3.81 | -0.33 |
| Feb | 3.00 | 3.36 | -0.36 |
| Mar | 3.63 | 3.94 | -0.31 |
| Apr | 3.86 | 4.08 | -0.22 |
| May | 4.02 | 4.27 | -0.25 |
| Jun | 4.63 | 5.12 | -0.49 |
| Jul | 4.21 | 4.55 | -0.34 |
| Aug | 4.00 | 4.43 | -0.43 |
| Sep | 3.87 | 4.13 | -0.26 |
| Oct | 4.90 | 5.35 | -0.45 |
| Nov | 3.68 | 4.04 | -0.36 |
| Dec | 4.22 | 4.63 | -0.41 |
47.50 | 51.71 | -4.21 |