| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.72 | -0.04 |
| Feb | 0.78 | 0.80 | -0.02 |
| Mar | 1.44 | 1.49 | -0.05 |
| Apr | 2.47 | 2.68 | -0.21 |
| May | 3.52 | 3.81 | -0.29 |
| Jun | 4.48 | 4.52 | -0.04 |
| Jul | 3.67 | 3.62 | 0.05 |
| Aug | 3.83 | 4.07 | -0.24 |
| Sep | 2.99 | 3.16 | -0.17 |
| Oct | 2.22 | 2.43 | -0.21 |
| Nov | 1.29 | 1.32 | -0.03 |
| Dec | 0.88 | 0.98 | -0.10 |
28.25 | 29.60 | -1.35 |