| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.89 | 4.24 | -0.35 |
| Feb | 3.37 | 3.65 | -0.28 |
| Mar | 3.99 | 4.39 | -0.40 |
| Apr | 4.32 | 4.37 | -0.05 |
| May | 4.30 | 4.42 | -0.12 |
| Jun | 4.84 | 5.01 | -0.17 |
| Jul | 4.59 | 4.74 | -0.15 |
| Aug | 4.35 | 4.80 | -0.45 |
| Sep | 4.63 | 4.71 | -0.08 |
| Oct | 5.21 | 5.51 | -0.30 |
| Nov | 4.10 | 4.36 | -0.26 |
| Dec | 4.56 | 5.23 | -0.67 |
52.15 | 55.43 | -3.28 |