| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.04 | 1.03 | 0.01 |
| Feb | 1.45 | 1.47 | -0.02 |
| Mar | 2.39 | 2.31 | 0.08 |
| Apr | 3.79 | 3.68 | 0.11 |
| May | 5.43 | 5.49 | -0.06 |
| Jun | 5.26 | 5.17 | 0.09 |
| Jul | 4.56 | 4.53 | 0.03 |
| Aug | 3.98 | 4.11 | -0.13 |
| Sep | 3.84 | 3.94 | -0.10 |
| Oct | 3.12 | 3.15 | -0.03 |
| Nov | 2.08 | 1.96 | 0.12 |
| Dec | 1.57 | 1.58 | -0.01 |
38.51 | 38.42 | 0.09 |