| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.84 | 0.90 | -0.06 |
| Feb | 0.83 | 0.89 | -0.06 |
| Mar | 1.62 | 1.70 | -0.08 |
| Apr | 2.84 | 2.95 | -0.11 |
| May | 4.00 | 4.25 | -0.25 |
| Jun | 4.79 | 5.05 | -0.26 |
| Jul | 4.11 | 4.18 | -0.07 |
| Aug | 4.48 | 4.60 | -0.12 |
| Sep | 3.32 | 3.39 | -0.07 |
| Oct | 2.55 | 2.57 | -0.02 |
| Nov | 1.52 | 1.61 | -0.09 |
| Dec | 1.15 | 1.23 | -0.08 |
32.05 | 33.32 | -1.27 |