| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.42 | -0.03 |
| Feb | 0.48 | 0.53 | -0.05 |
| Mar | 1.07 | 1.14 | -0.07 |
| Apr | 1.63 | 1.75 | -0.12 |
| May | 2.70 | 2.74 | -0.04 |
| Jun | 2.91 | 2.81 | 0.10 |
| Jul | 3.08 | 3.02 | 0.06 |
| Aug | 2.75 | 2.98 | -0.23 |
| Sep | 1.46 | 1.47 | -0.01 |
| Oct | 1.44 | 1.52 | -0.08 |
| Nov | 0.59 | 0.65 | -0.06 |
| Dec | 0.46 | 0.67 | -0.21 |
18.96 | 19.70 | -0.74 |