| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.56 | 0.59 | -0.03 |
| Feb | 0.61 | 0.63 | -0.02 |
| Mar | 1.39 | 1.34 | 0.05 |
| Apr | 1.90 | 1.87 | 0.03 |
| May | 3.04 | 3.12 | -0.08 |
| Jun | 3.47 | 3.35 | 0.12 |
| Jul | 3.25 | 3.08 | 0.17 |
| Aug | 3.08 | 3.07 | 0.01 |
| Sep | 1.48 | 1.46 | 0.02 |
| Oct | 1.96 | 1.93 | 0.03 |
| Nov | 0.76 | 0.76 | 0.00 |
| Dec | 0.86 | 0.90 | -0.04 |
22.36 | 22.10 | 0.26 |