| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.21 | 3.48 | -0.27 |
| Feb | 2.76 | 2.97 | -0.21 |
| Mar | 4.24 | 4.42 | -0.18 |
| Apr | 3.44 | 3.51 | -0.07 |
| May | 3.21 | 3.39 | -0.18 |
| Jun | 4.20 | 4.14 | 0.06 |
| Jul | 4.58 | 4.59 | -0.01 |
| Aug | 4.72 | 4.77 | -0.05 |
| Sep | 3.82 | 3.90 | -0.08 |
| Oct | 3.90 | 4.02 | -0.12 |
| Nov | 3.19 | 3.23 | -0.04 |
| Dec | 4.09 | 4.40 | -0.31 |
45.36 | 46.82 | -1.46 |