| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.91 | 4.07 | -0.16 |
| Feb | 3.28 | 3.68 | -0.40 |
| Mar | 4.26 | 4.65 | -0.39 |
| Apr | 4.06 | 4.15 | -0.09 |
| May | 3.13 | 3.36 | -0.23 |
| Jun | 3.31 | 3.29 | 0.02 |
| Jul | 2.41 | 2.68 | -0.27 |
| Aug | 3.43 | 3.36 | 0.07 |
| Sep | 3.72 | 3.85 | -0.13 |
| Oct | 4.33 | 4.49 | -0.16 |
| Nov | 3.98 | 4.11 | -0.13 |
| Dec | 4.71 | 4.89 | -0.18 |
44.53 | 46.58 | -2.05 |