| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.30 | 4.50 | -0.20 |
| Feb | 3.98 | 4.10 | -0.12 |
| Mar | 4.60 | 4.64 | -0.04 |
| Apr | 3.65 | 3.85 | -0.20 |
| May | 3.91 | 3.85 | 0.06 |
| Jun | 4.07 | 4.06 | 0.01 |
| Jul | 4.03 | 3.98 | 0.05 |
| Aug | 4.40 | 4.55 | -0.15 |
| Sep | 3.52 | 3.63 | -0.11 |
| Oct | 3.27 | 3.39 | -0.12 |
| Nov | 3.58 | 3.92 | -0.34 |
| Dec | 4.54 | 4.94 | -0.40 |
47.85 | 49.41 | -1.56 |