| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.79 | 4.38 | -0.59 |
| Feb | 2.59 | 3.04 | -0.45 |
| Mar | 3.11 | 3.71 | -0.60 |
| Apr | 3.75 | 3.91 | -0.16 |
| May | 3.69 | 3.97 | -0.28 |
| Jun | 4.20 | 4.21 | -0.01 |
| Jul | 4.51 | 4.60 | -0.09 |
| Aug | 3.90 | 4.25 | -0.35 |
| Sep | 4.16 | 4.48 | -0.32 |
| Oct | 4.42 | 4.75 | -0.33 |
| Nov | 3.94 | 4.48 | -0.54 |
| Dec | 4.07 | 4.57 | -0.50 |
46.13 | 50.35 | -4.22 |