| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.33 | 4.27 | 0.06 |
| Feb | 4.37 | 4.28 | 0.09 |
| Mar | 4.72 | 4.68 | 0.04 |
| Apr | 3.61 | 3.58 | 0.03 |
| May | 3.06 | 2.97 | 0.09 |
| Jun | 3.97 | 4.42 | -0.45 |
| Jul | 4.24 | 4.10 | 0.14 |
| Aug | 4.44 | 4.42 | 0.02 |
| Sep | 3.92 | 3.95 | -0.03 |
| Oct | 3.01 | 2.90 | 0.11 |
| Nov | 3.39 | 3.41 | -0.02 |
| Dec | 4.47 | 4.46 | 0.01 |
47.53 | 47.44 | 0.09 |