| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.83 | 4.16 | -0.33 |
| Feb | 3.39 | 3.69 | -0.30 |
| Mar | 4.88 | 5.45 | -0.57 |
| Apr | 4.34 | 4.79 | -0.45 |
| May | 3.50 | 3.68 | -0.18 |
| Jun | 3.68 | 3.99 | -0.31 |
| Jul | 3.15 | 3.24 | -0.09 |
| Aug | 3.72 | 4.08 | -0.36 |
| Sep | 3.91 | 4.07 | -0.16 |
| Oct | 4.61 | 4.88 | -0.27 |
| Nov | 4.01 | 4.35 | -0.34 |
| Dec | 4.73 | 5.22 | -0.49 |
47.75 | 51.60 | -3.85 |