| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.30 | 3.56 | -0.26 |
| Feb | 2.82 | 3.03 | -0.21 |
| Mar | 3.84 | 3.89 | -0.05 |
| Apr | 3.91 | 3.89 | 0.02 |
| May | 3.79 | 3.91 | -0.12 |
| Jun | 4.36 | 4.41 | -0.05 |
| Jul | 4.57 | 4.52 | 0.05 |
| Aug | 4.36 | 4.76 | -0.40 |
| Sep | 4.42 | 4.45 | -0.03 |
| Oct | 4.64 | 4.69 | -0.05 |
| Nov | 3.73 | 3.86 | -0.13 |
| Dec | 4.05 | 4.34 | -0.29 |
47.79 | 49.31 | -1.52 |