| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.64 | 3.79 | -0.15 |
| Feb | 3.96 | 4.00 | -0.04 |
| Mar | 4.31 | 4.21 | 0.10 |
| Apr | 3.94 | 3.94 | 0.00 |
| May | 4.66 | 4.51 | 0.15 |
| Jun | 3.95 | 3.96 | -0.01 |
| Jul | 2.98 | 2.83 | 0.15 |
| Aug | 2.77 | 2.64 | 0.13 |
| Sep | 3.77 | 3.42 | 0.35 |
| Oct | 4.79 | 4.51 | 0.28 |
| Nov | 4.02 | 3.74 | 0.28 |
| Dec | 4.35 | 4.42 | -0.07 |
47.14 | 45.97 | 1.17 |