| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.56 | 0.55 | 0.01 |
| Feb | 0.77 | 0.72 | 0.05 |
| Mar | 1.52 | 1.53 | -0.01 |
| Apr | 2.99 | 3.02 | -0.03 |
| May | 3.83 | 3.95 | -0.12 |
| Jun | 4.31 | 4.37 | -0.06 |
| Jul | 3.16 | 3.54 | -0.38 |
| Aug | 3.25 | 3.04 | 0.21 |
| Sep | 2.96 | 2.99 | -0.03 |
| Oct | 2.35 | 2.48 | -0.13 |
| Nov | 1.22 | 1.26 | -0.04 |
| Dec | 0.88 | 0.81 | 0.07 |
27.80 | 28.26 | -0.46 |