| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.63 | 0.05 |
| Feb | 0.70 | 0.71 | -0.01 |
| Mar | 1.35 | 1.31 | 0.04 |
| Apr | 2.30 | 2.37 | -0.07 |
| May | 3.40 | 3.39 | 0.01 |
| Jun | 4.33 | 4.31 | 0.02 |
| Jul | 4.30 | 4.19 | 0.11 |
| Aug | 3.56 | 3.50 | 0.06 |
| Sep | 2.99 | 2.87 | 0.12 |
| Oct | 2.67 | 2.71 | -0.04 |
| Nov | 1.26 | 1.21 | 0.05 |
| Dec | 0.89 | 0.91 | -0.02 |
28.43 | 28.11 | 0.32 |