| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.65 | 0.71 | -0.06 |
| Feb | 0.66 | 0.71 | -0.05 |
| Mar | 1.22 | 1.32 | -0.10 |
| Apr | 2.11 | 2.26 | -0.15 |
| May | 3.41 | 3.45 | -0.04 |
| Jun | 4.32 | 4.33 | -0.01 |
| Jul | 4.36 | 4.38 | -0.02 |
| Aug | 3.39 | 3.23 | 0.16 |
| Sep | 2.89 | 2.87 | 0.02 |
| Oct | 2.72 | 2.75 | -0.03 |
| Nov | 1.27 | 1.29 | -0.02 |
| Dec | 0.90 | 0.94 | -0.04 |
27.90 | 28.24 | -0.34 |