| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.54 | 0.59 | -0.05 |
| Feb | 0.71 | 0.79 | -0.08 |
| Mar | 1.38 | 1.40 | -0.02 |
| Apr | 2.73 | 2.87 | -0.14 |
| May | 4.48 | 4.53 | -0.05 |
| Jun | 4.08 | 3.73 | 0.35 |
| Jul | 3.65 | 3.58 | 0.07 |
| Aug | 3.33 | 3.41 | -0.08 |
| Sep | 2.02 | 2.10 | -0.08 |
| Oct | 2.13 | 2.05 | 0.08 |
| Nov | 1.22 | 1.23 | -0.01 |
| Dec | 0.83 | 0.90 | -0.07 |
27.10 | 27.18 | -0.08 |