| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.52 | 0.53 | -0.01 |
| Feb | 0.55 | 0.52 | 0.03 |
| Mar | 0.95 | 0.98 | -0.03 |
| Apr | 1.52 | 1.55 | -0.03 |
| May | 3.06 | 3.27 | -0.21 |
| Jun | 3.43 | 3.93 | -0.50 |
| Jul | 3.36 | 3.27 | 0.09 |
| Aug | 2.42 | 2.43 | -0.01 |
| Sep | 2.30 | 2.47 | -0.17 |
| Oct | 1.79 | 1.73 | 0.06 |
| Nov | 0.62 | 0.65 | -0.03 |
| Dec | 0.59 | 0.62 | -0.03 |
21.11 | 21.95 | -0.84 |