| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.72 | -0.04 |
| Feb | 0.68 | 0.71 | -0.03 |
| Mar | 1.15 | 1.20 | -0.05 |
| Apr | 2.01 | 2.16 | -0.15 |
| May | 3.11 | 3.21 | -0.10 |
| Jun | 4.32 | 4.21 | 0.11 |
| Jul | 4.10 | 4.11 | -0.01 |
| Aug | 3.23 | 3.26 | -0.03 |
| Sep | 2.97 | 3.03 | -0.06 |
| Oct | 2.71 | 2.79 | -0.08 |
| Nov | 1.16 | 1.20 | -0.04 |
| Dec | 0.89 | 0.97 | -0.08 |
27.01 | 27.57 | -0.56 |