| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.34 | 0.36 | -0.02 |
| Feb | 0.49 | 0.54 | -0.05 |
| Mar | 1.04 | 1.04 | 0.00 |
| Apr | 2.13 | 2.25 | -0.12 |
| May | 3.04 | 2.87 | 0.17 |
| Jun | 3.06 | 3.17 | -0.11 |
| Jul | 3.10 | 3.13 | -0.03 |
| Aug | 2.74 | 2.85 | -0.11 |
| Sep | 1.49 | 1.57 | -0.08 |
| Oct | 1.52 | 1.57 | -0.05 |
| Nov | 0.61 | 0.67 | -0.06 |
| Dec | 0.43 | 0.46 | -0.03 |
19.99 | 20.48 | -0.49 |