| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.51 | 3.91 | -0.40 |
| Feb | 3.04 | 3.48 | -0.44 |
| Mar | 4.01 | 4.41 | -0.40 |
| Apr | 4.07 | 4.51 | -0.44 |
| May | 3.52 | 3.63 | -0.11 |
| Jun | 4.28 | 4.48 | -0.20 |
| Jul | 3.87 | 4.10 | -0.23 |
| Aug | 3.88 | 4.18 | -0.30 |
| Sep | 4.15 | 4.49 | -0.34 |
| Oct | 4.66 | 5.03 | -0.37 |
| Nov | 3.84 | 3.98 | -0.14 |
| Dec | 4.20 | 4.73 | -0.53 |
47.03 | 50.93 | -3.90 |