| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.35 | 3.42 | -0.07 |
| Feb | 2.79 | 2.73 | 0.06 |
| Mar | 3.83 | 4.10 | -0.27 |
| Apr | 3.37 | 3.38 | -0.01 |
| May | 4.19 | 4.22 | -0.03 |
| Jun | 3.70 | 3.48 | 0.22 |
| Jul | 4.26 | 4.01 | 0.25 |
| Aug | 3.67 | 3.71 | -0.04 |
| Sep | 4.48 | 4.60 | -0.12 |
| Oct | 3.68 | 3.59 | 0.09 |
| Nov | 3.40 | 3.36 | 0.04 |
| Dec | 3.61 | 3.52 | 0.09 |
44.33 | 44.12 | 0.21 |