| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.70 | -0.02 |
| Feb | 0.78 | 0.81 | -0.03 |
| Mar | 1.43 | 1.48 | -0.05 |
| Apr | 2.46 | 2.64 | -0.18 |
| May | 3.56 | 3.85 | -0.29 |
| Jun | 4.37 | 4.49 | -0.12 |
| Jul | 3.60 | 3.62 | -0.02 |
| Aug | 3.85 | 4.06 | -0.21 |
| Sep | 3.00 | 3.13 | -0.13 |
| Oct | 2.22 | 2.43 | -0.21 |
| Nov | 1.31 | 1.34 | -0.03 |
| Dec | 0.88 | 0.98 | -0.10 |
28.14 | 29.53 | -1.39 |