| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.60 | 3.62 | -0.02 |
| Feb | 2.83 | 2.89 | -0.06 |
| Mar | 3.99 | 4.19 | -0.20 |
| Apr | 3.96 | 4.00 | -0.04 |
| May | 4.13 | 4.32 | -0.19 |
| Jun | 4.52 | 4.84 | -0.32 |
| Jul | 4.93 | 4.96 | -0.03 |
| Aug | 4.62 | 4.67 | -0.05 |
| Sep | 4.55 | 4.68 | -0.13 |
| Oct | 4.39 | 4.58 | -0.19 |
| Nov | 3.45 | 3.66 | -0.21 |
| Dec | 4.30 | 4.57 | -0.27 |
49.27 | 50.98 | -1.71 |