| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.91 | 4.08 | -0.17 |
| Feb | 3.03 | 3.09 | -0.06 |
| Mar | 3.23 | 3.31 | -0.08 |
| Apr | 3.77 | 3.84 | -0.07 |
| May | 4.24 | 4.61 | -0.37 |
| Jun | 4.71 | 4.73 | -0.02 |
| Jul | 4.35 | 4.26 | 0.09 |
| Aug | 4.32 | 4.54 | -0.22 |
| Sep | 4.25 | 4.23 | 0.02 |
| Oct | 5.02 | 5.39 | -0.37 |
| Nov | 4.08 | 4.14 | -0.06 |
| Dec | 4.10 | 4.21 | -0.11 |
49.01 | 50.43 | -1.42 |