| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.48 | 3.60 | -0.12 |
| Feb | 2.86 | 2.94 | -0.08 |
| Mar | 4.11 | 4.20 | -0.09 |
| Apr | 3.70 | 3.85 | -0.15 |
| May | 4.02 | 3.99 | 0.03 |
| Jun | 4.25 | 4.52 | -0.27 |
| Jul | 4.90 | 4.96 | -0.06 |
| Aug | 4.48 | 4.47 | 0.01 |
| Sep | 4.05 | 4.26 | -0.21 |
| Oct | 4.09 | 4.17 | -0.08 |
| Nov | 3.24 | 3.37 | -0.13 |
| Dec | 4.30 | 4.39 | -0.09 |
47.48 | 48.72 | -1.24 |