| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.62 | 3.85 | -0.23 |
| Feb | 3.05 | 3.30 | -0.25 |
| Mar | 4.42 | 4.72 | -0.30 |
| Apr | 4.12 | 4.37 | -0.25 |
| May | 3.56 | 3.47 | 0.09 |
| Jun | 3.89 | 4.06 | -0.17 |
| Jul | 3.37 | 3.51 | -0.14 |
| Aug | 3.79 | 4.11 | -0.32 |
| Sep | 4.11 | 4.41 | -0.30 |
| Oct | 4.59 | 4.63 | -0.04 |
| Nov | 3.73 | 4.02 | -0.29 |
| Dec | 4.47 | 4.74 | -0.27 |
46.72 | 49.19 | -2.47 |