| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.44 | 3.57 | -0.13 |
| Feb | 2.76 | 2.85 | -0.09 |
| Mar | 4.08 | 4.31 | -0.23 |
| Apr | 3.72 | 3.73 | -0.01 |
| May | 3.85 | 3.96 | -0.11 |
| Jun | 4.23 | 4.27 | -0.04 |
| Jul | 4.81 | 4.73 | 0.08 |
| Aug | 4.43 | 4.77 | -0.34 |
| Sep | 4.42 | 4.43 | -0.01 |
| Oct | 3.98 | 4.02 | -0.04 |
| Nov | 3.32 | 3.27 | 0.05 |
| Dec | 4.29 | 4.41 | -0.12 |
47.33 | 48.32 | -0.99 |