| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.68 | 3.75 | -0.07 |
| Feb | 2.89 | 3.05 | -0.16 |
| Mar | 4.02 | 3.98 | 0.04 |
| Apr | 3.73 | 3.60 | 0.13 |
| May | 4.32 | 4.48 | -0.16 |
| Jun | 4.59 | 4.52 | 0.07 |
| Jul | 4.17 | 4.37 | -0.20 |
| Aug | 4.19 | 4.23 | -0.04 |
| Sep | 4.71 | 5.18 | -0.47 |
| Oct | 3.47 | 3.30 | 0.17 |
| Nov | 3.39 | 3.26 | 0.13 |
| Dec | 3.71 | 3.62 | 0.09 |
46.87 | 47.34 | -0.47 |