| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.41 | 3.43 | -0.02 |
| Feb | 3.03 | 3.07 | -0.04 |
| Mar | 4.10 | 4.20 | -0.10 |
| Apr | 3.37 | 3.45 | -0.08 |
| May | 3.51 | 3.63 | -0.12 |
| Jun | 3.68 | 3.86 | -0.18 |
| Jul | 4.45 | 4.74 | -0.29 |
| Aug | 4.64 | 4.59 | 0.05 |
| Sep | 4.18 | 4.41 | -0.23 |
| Oct | 4.19 | 4.49 | -0.30 |
| Nov | 3.35 | 3.42 | -0.07 |
| Dec | 3.88 | 4.10 | -0.22 |
45.79 | 47.39 | -1.60 |