| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.05 | 4.09 | -0.04 |
| Feb | 3.34 | 3.33 | 0.01 |
| Mar | 4.09 | 4.05 | 0.04 |
| Apr | 4.12 | 4.15 | -0.03 |
| May | 4.03 | 4.03 | 0.00 |
| Jun | 4.27 | 4.37 | -0.10 |
| Jul | 4.48 | 4.59 | -0.11 |
| Aug | 4.41 | 4.61 | -0.20 |
| Sep | 4.16 | 4.23 | -0.07 |
| Oct | 3.33 | 3.21 | 0.12 |
| Nov | 3.61 | 3.52 | 0.09 |
| Dec | 3.98 | 4.08 | -0.10 |
47.87 | 48.26 | -0.39 |