| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.37 | 0.02 |
| Feb | 0.52 | 0.51 | 0.01 |
| Mar | 1.02 | 1.05 | -0.03 |
| Apr | 2.07 | 2.11 | -0.04 |
| May | 3.02 | 3.09 | -0.07 |
| Jun | 3.25 | 3.39 | -0.14 |
| Jul | 2.33 | 2.75 | -0.42 |
| Aug | 1.96 | 2.21 | -0.25 |
| Sep | 1.45 | 1.57 | -0.12 |
| Oct | 1.39 | 1.40 | -0.01 |
| Nov | 0.62 | 0.65 | -0.03 |
| Dec | 0.43 | 0.50 | -0.07 |
18.45 | 19.60 | -1.15 |