| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.09 | 4.10 | -0.01 |
| Feb | 4.57 | 4.44 | 0.13 |
| Mar | 4.74 | 4.78 | -0.04 |
| Apr | 4.95 | 4.92 | 0.03 |
| May | 4.94 | 5.13 | -0.19 |
| Jun | 4.23 | 4.24 | -0.01 |
| Jul | 4.48 | 4.53 | -0.05 |
| Aug | 3.90 | 3.91 | -0.01 |
| Sep | 3.75 | 3.77 | -0.02 |
| Oct | 3.53 | 3.48 | 0.05 |
| Nov | 3.68 | 3.63 | 0.05 |
| Dec | 4.68 | 4.75 | -0.07 |
51.54 | 51.68 | -0.14 |