| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.95 | 4.24 | -0.29 |
| Feb | 3.22 | 3.46 | -0.24 |
| Mar | 3.78 | 3.93 | -0.15 |
| Apr | 4.40 | 4.50 | -0.10 |
| May | 4.45 | 4.45 | 0.00 |
| Jun | 4.90 | 4.93 | -0.03 |
| Jul | 4.22 | 4.05 | 0.17 |
| Aug | 4.33 | 4.26 | 0.07 |
| Sep | 3.97 | 4.20 | -0.23 |
| Oct | 4.87 | 5.38 | -0.51 |
| Nov | 4.11 | 4.59 | -0.48 |
| Dec | 4.35 | 4.81 | -0.46 |
50.55 | 52.80 | -2.25 |