| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.76 | 4.15 | -0.39 |
| Feb | 3.34 | 3.68 | -0.34 |
| Mar | 4.82 | 5.42 | -0.60 |
| Apr | 4.31 | 4.77 | -0.46 |
| May | 3.50 | 3.66 | -0.16 |
| Jun | 3.65 | 3.97 | -0.32 |
| Jul | 3.10 | 3.22 | -0.12 |
| Aug | 3.68 | 4.06 | -0.38 |
| Sep | 3.91 | 4.05 | -0.14 |
| Oct | 4.58 | 4.87 | -0.29 |
| Nov | 3.96 | 4.33 | -0.37 |
| Dec | 4.68 | 5.20 | -0.52 |
47.29 | 51.38 | -4.09 |