| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.58 | -0.12 |
| Feb | 2.87 | 2.94 | -0.07 |
| Mar | 4.08 | 4.20 | -0.12 |
| Apr | 3.72 | 3.87 | -0.15 |
| May | 4.00 | 3.98 | 0.02 |
| Jun | 4.28 | 4.54 | -0.26 |
| Jul | 4.82 | 4.93 | -0.11 |
| Aug | 4.44 | 4.40 | 0.04 |
| Sep | 4.11 | 4.28 | -0.17 |
| Oct | 4.07 | 4.21 | -0.14 |
| Nov | 3.26 | 3.39 | -0.13 |
| Dec | 4.29 | 4.37 | -0.08 |
47.40 | 48.69 | -1.29 |