| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.48 | 3.62 | -0.14 |
| Feb | 2.73 | 2.82 | -0.09 |
| Mar | 4.10 | 4.23 | -0.13 |
| Apr | 3.63 | 3.85 | -0.22 |
| May | 4.02 | 4.03 | -0.01 |
| Jun | 4.34 | 4.55 | -0.21 |
| Jul | 5.03 | 4.88 | 0.15 |
| Aug | 4.34 | 4.48 | -0.14 |
| Sep | 4.04 | 4.19 | -0.15 |
| Oct | 4.09 | 4.11 | -0.02 |
| Nov | 3.21 | 3.38 | -0.17 |
| Dec | 4.28 | 4.37 | -0.09 |
47.29 | 48.51 | -1.22 |