| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.66 | 3.76 | -0.10 |
| Feb | 3.07 | 3.19 | -0.12 |
| Mar | 3.78 | 3.97 | -0.19 |
| Apr | 3.34 | 3.46 | -0.12 |
| May | 3.44 | 3.37 | 0.07 |
| Jun | 3.98 | 4.16 | -0.18 |
| Jul | 3.81 | 3.90 | -0.09 |
| Aug | 4.10 | 4.32 | -0.22 |
| Sep | 3.61 | 3.84 | -0.23 |
| Oct | 3.02 | 3.16 | -0.14 |
| Nov | 3.09 | 3.27 | -0.18 |
| Dec | 3.61 | 3.82 | -0.21 |
42.51 | 44.22 | -1.71 |