| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.80 | 4.07 | -0.27 |
| Feb | 3.26 | 3.47 | -0.21 |
| Mar | 4.20 | 4.29 | -0.09 |
| Apr | 4.01 | 4.28 | -0.27 |
| May | 3.83 | 4.04 | -0.21 |
| Jun | 4.47 | 4.64 | -0.17 |
| Jul | 4.05 | 4.31 | -0.26 |
| Aug | 4.54 | 4.64 | -0.10 |
| Sep | 3.94 | 4.02 | -0.08 |
| Oct | 3.54 | 3.46 | 0.08 |
| Nov | 3.53 | 3.54 | -0.01 |
| Dec | 3.98 | 4.24 | -0.26 |
47.15 | 49.00 | -1.85 |