| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.29 | 0.33 | -0.04 |
| Feb | 0.44 | 0.45 | -0.01 |
| Mar | 0.79 | 0.84 | -0.05 |
| Apr | 1.71 | 1.76 | -0.05 |
| May | 2.75 | 2.82 | -0.07 |
| Jun | 2.64 | 2.70 | -0.06 |
| Jul | 2.79 | 2.77 | 0.02 |
| Aug | 2.34 | 2.41 | -0.07 |
| Sep | 1.27 | 1.28 | -0.01 |
| Oct | 1.18 | 1.22 | -0.04 |
| Nov | 0.49 | 0.50 | -0.01 |
| Dec | 0.38 | 0.40 | -0.02 |
17.07 | 17.48 | -0.41 |