| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.70 | -0.02 |
| Feb | 0.79 | 0.81 | -0.02 |
| Mar | 1.45 | 1.45 | 0.00 |
| Apr | 2.52 | 2.63 | -0.11 |
| May | 3.65 | 3.87 | -0.22 |
| Jun | 4.36 | 4.38 | -0.02 |
| Jul | 3.65 | 3.67 | -0.02 |
| Aug | 3.85 | 4.02 | -0.17 |
| Sep | 3.03 | 3.11 | -0.08 |
| Oct | 2.31 | 2.44 | -0.13 |
| Nov | 1.34 | 1.36 | -0.02 |
| Dec | 0.90 | 0.98 | -0.08 |
28.53 | 29.42 | -0.89 |