| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.89 | 0.92 | -0.03 |
| Feb | 0.91 | 0.94 | -0.03 |
| Mar | 1.78 | 1.69 | 0.09 |
| Apr | 3.01 | 2.91 | 0.10 |
| May | 4.28 | 4.28 | 0.00 |
| Jun | 4.87 | 5.15 | -0.28 |
| Jul | 4.11 | 4.02 | 0.09 |
| Aug | 4.49 | 4.52 | -0.03 |
| Sep | 3.46 | 3.56 | -0.10 |
| Oct | 2.63 | 2.53 | 0.10 |
| Nov | 1.63 | 1.55 | 0.08 |
| Dec | 1.20 | 1.27 | -0.07 |
33.26 | 33.34 | -0.08 |