| 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 | 0.79 | 0.03 |
| Apr | 1.91 | 2.02 | -0.11 |
| May | 3.25 | 3.14 | 0.11 |
| Jun | 3.51 | 3.53 | -0.02 |
| Jul | 2.84 | 2.99 | -0.15 |
| Aug | 2.38 | 2.40 | -0.02 |
| Sep | 1.95 | 1.88 | 0.07 |
| Oct | 1.73 | 1.70 | 0.03 |
| Nov | 0.54 | 0.57 | -0.03 |
| Dec | 0.49 | 0.55 | -0.06 |
20.46 | 20.62 | -0.16 |