| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.34 | 1.39 | -0.05 |
| Feb | 1.64 | 1.62 | 0.02 |
| Mar | 2.34 | 2.31 | 0.03 |
| Apr | 3.77 | 3.66 | 0.11 |
| May | 4.39 | 4.46 | -0.07 |
| Jun | 4.97 | 4.96 | 0.01 |
| Jul | 4.18 | 4.21 | -0.03 |
| Aug | 4.03 | 4.04 | -0.01 |
| Sep | 3.77 | 3.58 | 0.19 |
| Oct | 2.82 | 2.86 | -0.04 |
| Nov | 2.24 | 2.18 | 0.06 |
| Dec | 1.86 | 1.82 | 0.04 |
37.35 | 37.09 | 0.26 |