| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.60 | 0.61 | -0.01 |
| Feb | 0.52 | 0.49 | 0.03 |
| Mar | 1.33 | 1.37 | -0.04 |
| Apr | 1.73 | 1.83 | -0.10 |
| May | 2.56 | 2.55 | 0.01 |
| Jun | 3.05 | 3.11 | -0.06 |
| Jul | 2.96 | 2.85 | 0.11 |
| Aug | 2.89 | 2.88 | 0.01 |
| Sep | 1.63 | 1.63 | 0.00 |
| Oct | 1.87 | 1.93 | -0.06 |
| Nov | 0.73 | 0.78 | -0.05 |
| Dec | 0.85 | 0.88 | -0.03 |
20.72 | 20.91 | -0.19 |