| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.06 | 3.18 | -0.12 |
| Feb | 2.27 | 2.53 | -0.26 |
| Mar | 2.73 | 2.94 | -0.21 |
| Apr | 3.42 | 3.47 | -0.05 |
| May | 3.30 | 3.36 | -0.06 |
| Jun | 3.64 | 3.71 | -0.07 |
| Jul | 3.60 | 3.66 | -0.06 |
| Aug | 3.48 | 3.40 | 0.08 |
| Sep | 4.00 | 4.02 | -0.02 |
| Oct | 3.86 | 4.05 | -0.19 |
| Nov | 3.39 | 3.66 | -0.27 |
| Dec | 3.40 | 3.51 | -0.11 |
40.15 | 41.49 | -1.34 |