| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.49 | 3.70 | -0.21 |
| Feb | 3.00 | 3.17 | -0.17 |
| Mar | 3.73 | 3.80 | -0.07 |
| Apr | 3.98 | 4.08 | -0.10 |
| May | 4.19 | 4.38 | -0.19 |
| Jun | 4.49 | 4.66 | -0.17 |
| Jul | 4.59 | 4.30 | 0.29 |
| Aug | 3.98 | 4.22 | -0.24 |
| Sep | 4.06 | 3.79 | 0.27 |
| Oct | 3.22 | 3.34 | -0.12 |
| Nov | 3.41 | 3.49 | -0.08 |
| Dec | 3.63 | 3.74 | -0.11 |
45.77 | 46.67 | -0.90 |