| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.37 | 0.41 | -0.04 |
| Feb | 0.48 | 0.57 | -0.09 |
| Mar | 0.98 | 1.01 | -0.03 |
| Apr | 2.09 | 2.19 | -0.10 |
| May | 2.91 | 3.17 | -0.26 |
| Jun | 3.19 | 3.24 | -0.05 |
| Jul | 3.42 | 3.34 | 0.08 |
| Aug | 2.98 | 3.04 | -0.06 |
| Sep | 1.54 | 1.60 | -0.06 |
| Oct | 1.47 | 1.49 | -0.02 |
| Nov | 0.72 | 0.68 | 0.04 |
| Dec | 0.54 | 0.57 | -0.03 |
20.69 | 21.31 | -0.62 |