| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.49 | 3.72 | -0.23 |
| Feb | 2.92 | 3.02 | -0.10 |
| Mar | 4.20 | 4.24 | -0.04 |
| Apr | 3.70 | 3.77 | -0.07 |
| May | 3.70 | 3.92 | -0.22 |
| Jun | 4.36 | 4.30 | 0.06 |
| Jul | 4.55 | 4.54 | 0.01 |
| Aug | 4.40 | 4.35 | 0.05 |
| Sep | 4.75 | 5.08 | -0.33 |
| Oct | 3.48 | 3.45 | 0.03 |
| Nov | 3.30 | 3.35 | -0.05 |
| Dec | 3.56 | 3.59 | -0.03 |
46.41 | 47.33 | -0.92 |