| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.42 | 3.52 | -0.10 |
| Feb | 2.71 | 2.83 | -0.12 |
| Mar | 3.71 | 3.67 | 0.04 |
| Apr | 4.89 | 5.08 | -0.19 |
| May | 5.03 | 5.23 | -0.20 |
| Jun | 4.85 | 5.26 | -0.41 |
| Jul | 4.39 | 4.56 | -0.17 |
| Aug | 3.41 | 3.40 | 0.01 |
| Sep | 3.36 | 3.63 | -0.27 |
| Oct | 3.54 | 3.59 | -0.05 |
| Nov | 3.80 | 3.85 | -0.05 |
| Dec | 3.39 | 3.50 | -0.11 |
46.50 | 48.12 | -1.62 |