| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.45 | 0.43 | 0.02 |
| Feb | 0.59 | 0.62 | -0.03 |
| Mar | 0.82 | 0.77 | 0.05 |
| Apr | 1.89 | 1.99 | -0.10 |
| May | 3.23 | 3.08 | 0.15 |
| Jun | 3.47 | 3.49 | -0.02 |
| Jul | 2.85 | 3.01 | -0.16 |
| Aug | 2.39 | 2.43 | -0.04 |
| Sep | 1.95 | 1.86 | 0.09 |
| Oct | 1.73 | 1.67 | 0.06 |
| Nov | 0.54 | 0.56 | -0.02 |
| Dec | 0.49 | 0.56 | -0.07 |
20.40 | 20.47 | -0.07 |