| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.38 | 0.38 | 0.00 |
| Feb | 0.39 | 0.41 | -0.02 |
| Mar | 0.98 | 0.98 | 0.00 |
| Apr | 1.42 | 1.47 | -0.05 |
| May | 2.16 | 2.21 | -0.05 |
| Jun | 2.83 | 2.71 | 0.12 |
| Jul | 2.99 | 3.03 | -0.04 |
| Aug | 2.91 | 2.85 | 0.06 |
| Sep | 1.16 | 1.25 | -0.09 |
| Oct | 1.46 | 1.48 | -0.02 |
| Nov | 0.51 | 0.51 | 0.00 |
| Dec | 0.51 | 0.61 | -0.10 |
17.70 | 17.89 | -0.19 |