| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.71 | 0.76 | -0.05 |
| Feb | 0.68 | 0.75 | -0.07 |
| Mar | 1.33 | 1.36 | -0.03 |
| Apr | 2.35 | 2.43 | -0.08 |
| May | 3.37 | 3.39 | -0.02 |
| Jun | 4.37 | 4.49 | -0.12 |
| Jul | 4.36 | 4.33 | 0.03 |
| Aug | 3.60 | 3.43 | 0.17 |
| Sep | 2.96 | 3.00 | -0.04 |
| Oct | 2.70 | 2.76 | -0.06 |
| Nov | 1.20 | 1.20 | 0.00 |
| Dec | 0.86 | 0.95 | -0.09 |
28.49 | 28.85 | -0.36 |