| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.07 | 3.35 | 0.72 |
| Feb | 3.96 | 3.25 | 0.71 |
| Mar | 3.27 | 2.77 | 0.50 |
| Apr | 1.59 | 1.38 | 0.21 |
| May | 1.31 | 1.16 | 0.15 |
| Jun | 0.60 | 0.46 | 0.14 |
| Jul | 0.34 | 0.26 | 0.08 |
| Aug | 0.32 | 0.34 | -0.02 |
| Sep | 0.44 | 0.40 | 0.04 |
| Oct | 1.39 | 1.26 | 0.13 |
| Nov | 2.13 | 1.88 | 0.25 |
| Dec | 4.30 | 3.80 | 0.50 |
23.72 | 20.31 | 3.41 |