| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.82 | 4.12 | -0.30 |
| Feb | 3.46 | 3.68 | -0.22 |
| Mar | 4.96 | 5.35 | -0.39 |
| Apr | 4.32 | 4.57 | -0.25 |
| May | 3.39 | 3.36 | 0.03 |
| Jun | 3.63 | 3.74 | -0.11 |
| Jul | 3.16 | 3.10 | 0.06 |
| Aug | 3.59 | 3.63 | -0.04 |
| Sep | 3.92 | 3.75 | 0.17 |
| Oct | 4.37 | 4.60 | -0.23 |
| Nov | 4.09 | 4.09 | 0.00 |
| Dec | 4.60 | 5.08 | -0.48 |
47.31 | 49.07 | -1.76 |