| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.30 | 4.45 | -0.15 |
| Feb | 3.96 | 4.11 | -0.15 |
| Mar | 4.67 | 4.66 | 0.01 |
| Apr | 3.64 | 3.82 | -0.18 |
| May | 3.92 | 3.80 | 0.12 |
| Jun | 4.12 | 4.10 | 0.02 |
| Jul | 3.94 | 3.97 | -0.03 |
| Aug | 4.29 | 4.51 | -0.22 |
| Sep | 3.43 | 3.62 | -0.19 |
| Oct | 3.24 | 3.36 | -0.12 |
| Nov | 3.55 | 3.90 | -0.35 |
| Dec | 4.46 | 4.89 | -0.43 |
47.52 | 49.19 | -1.67 |