| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.46 | 0.44 | 0.02 |
| Feb | 0.59 | 0.60 | -0.01 |
| Mar | 0.98 | 1.07 | -0.09 |
| Apr | 2.14 | 2.13 | 0.01 |
| May | 3.30 | 3.38 | -0.08 |
| Jun | 3.34 | 3.39 | -0.05 |
| Jul | 2.59 | 2.49 | 0.10 |
| Aug | 2.16 | 2.09 | 0.07 |
| Sep | 1.47 | 1.46 | 0.01 |
| Oct | 1.65 | 1.66 | -0.01 |
| Nov | 0.57 | 0.59 | -0.02 |
| Dec | 0.47 | 0.51 | -0.04 |
19.72 | 19.81 | -0.09 |