| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.54 | 0.59 | -0.05 |
| Feb | 0.73 | 0.78 | -0.05 |
| Mar | 1.38 | 1.40 | -0.02 |
| Apr | 2.72 | 2.81 | -0.09 |
| May | 4.48 | 4.49 | -0.01 |
| Jun | 4.01 | 3.70 | 0.31 |
| Jul | 3.64 | 3.55 | 0.09 |
| Aug | 3.34 | 3.41 | -0.07 |
| Sep | 2.03 | 2.07 | -0.04 |
| Oct | 2.13 | 2.05 | 0.08 |
| Nov | 1.21 | 1.22 | -0.01 |
| Dec | 0.84 | 0.89 | -0.05 |
27.05 | 26.96 | 0.09 |