| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.34 | 0.28 | 0.06 |
| Feb | 0.53 | 0.47 | 0.06 |
| Mar | 0.93 | 0.86 | 0.07 |
| Apr | 2.09 | 2.03 | 0.06 |
| May | 3.71 | 3.49 | 0.22 |
| Jun | 3.19 | 3.09 | 0.10 |
| Jul | 2.68 | 2.52 | 0.16 |
| Aug | 1.88 | 2.08 | -0.20 |
| Sep | 1.38 | 1.37 | 0.01 |
| Oct | 1.35 | 1.42 | -0.07 |
| Nov | 0.48 | 0.42 | 0.06 |
| Dec | 0.38 | 0.36 | 0.02 |
18.94 | 18.39 | 0.55 |