| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.49 | 3.65 | -0.16 |
| Feb | 2.91 | 3.10 | -0.19 |
| Mar | 4.21 | 4.21 | 0.00 |
| Apr | 4.05 | 4.21 | -0.16 |
| May | 3.80 | 3.83 | -0.03 |
| Jun | 4.29 | 4.39 | -0.10 |
| Jul | 4.02 | 3.91 | 0.11 |
| Aug | 4.02 | 4.17 | -0.15 |
| Sep | 4.42 | 4.45 | -0.03 |
| Oct | 4.35 | 4.38 | -0.03 |
| Nov | 3.48 | 3.63 | -0.15 |
| Dec | 4.15 | 4.36 | -0.21 |
47.19 | 48.29 | -1.10 |