| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.34 | 0.35 | -0.01 |
| Feb | 0.49 | 0.48 | 0.01 |
| Mar | 1.00 | 1.08 | -0.08 |
| Apr | 2.20 | 2.13 | 0.07 |
| May | 3.27 | 3.32 | -0.05 |
| Jun | 3.52 | 3.21 | 0.31 |
| Jul | 3.10 | 3.35 | -0.25 |
| Aug | 2.38 | 2.11 | 0.27 |
| Sep | 1.72 | 1.89 | -0.17 |
| Oct | 1.44 | 1.40 | 0.04 |
| Nov | 0.52 | 0.49 | 0.03 |
| Dec | 0.34 | 0.31 | 0.03 |
20.32 | 20.12 | 0.20 |