| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.57 | 0.56 | 0.01 |
| Feb | 0.46 | 0.41 | 0.05 |
| Mar | 1.17 | 1.13 | 0.04 |
| Apr | 1.25 | 1.24 | 0.01 |
| May | 2.13 | 2.19 | -0.06 |
| Jun | 2.84 | 2.71 | 0.13 |
| Jul | 2.51 | 2.56 | -0.05 |
| Aug | 2.82 | 2.86 | -0.04 |
| Sep | 1.62 | 1.60 | 0.02 |
| Oct | 1.79 | 1.91 | -0.12 |
| Nov | 0.66 | 0.69 | -0.03 |
| Dec | 0.68 | 0.71 | -0.03 |
18.50 | 18.57 | -0.07 |