| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.54 | 3.74 | -0.20 |
| Feb | 2.87 | 3.03 | -0.16 |
| Mar | 4.20 | 4.18 | 0.02 |
| Apr | 3.96 | 4.17 | -0.21 |
| May | 4.01 | 4.10 | -0.09 |
| Jun | 4.73 | 4.81 | -0.08 |
| Jul | 4.59 | 4.72 | -0.13 |
| Aug | 4.54 | 4.77 | -0.23 |
| Sep | 4.36 | 4.54 | -0.18 |
| Oct | 4.48 | 4.56 | -0.08 |
| Nov | 3.71 | 3.81 | -0.10 |
| Dec | 4.41 | 4.59 | -0.18 |
49.40 | 51.02 | -1.62 |