| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.03 | 4.20 | -0.17 |
| Feb | 3.28 | 3.43 | -0.15 |
| Mar | 3.87 | 3.90 | -0.03 |
| Apr | 4.51 | 4.46 | 0.05 |
| May | 4.48 | 4.40 | 0.08 |
| Jun | 4.92 | 4.86 | 0.06 |
| Jul | 4.25 | 4.04 | 0.21 |
| Aug | 4.39 | 4.21 | 0.18 |
| Sep | 3.99 | 4.12 | -0.13 |
| Oct | 4.87 | 5.31 | -0.44 |
| Nov | 4.16 | 4.51 | -0.35 |
| Dec | 4.37 | 4.74 | -0.37 |
51.12 | 52.18 | -1.06 |