| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.89 | 0.91 | -0.02 |
| Feb | 0.98 | 0.92 | 0.06 |
| Mar | 1.62 | 1.57 | 0.05 |
| Apr | 2.84 | 2.92 | -0.08 |
| May | 4.01 | 3.87 | 0.14 |
| Jun | 4.61 | 4.65 | -0.04 |
| Jul | 4.49 | 4.34 | 0.15 |
| Aug | 4.23 | 4.03 | 0.20 |
| Sep | 3.50 | 3.37 | 0.13 |
| Oct | 2.98 | 2.94 | 0.04 |
| Nov | 1.74 | 1.71 | 0.03 |
| Dec | 1.22 | 1.29 | -0.07 |
33.11 | 32.52 | 0.59 |