| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.95 | 4.14 | -0.19 |
| Feb | 3.54 | 3.62 | -0.08 |
| Mar | 4.89 | 5.02 | -0.13 |
| Apr | 4.17 | 4.28 | -0.11 |
| May | 3.43 | 3.42 | 0.01 |
| Jun | 3.42 | 3.27 | 0.15 |
| Jul | 2.67 | 2.69 | -0.02 |
| Aug | 3.40 | 3.54 | -0.14 |
| Sep | 4.07 | 3.77 | 0.30 |
| Oct | 4.69 | 4.63 | 0.06 |
| Nov | 4.20 | 4.15 | 0.05 |
| Dec | 4.82 | 4.99 | -0.17 |
47.25 | 47.52 | -0.27 |