| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.38 | 0.38 | 0.00 |
| Feb | 0.46 | 0.48 | -0.02 |
| Mar | 0.84 | 0.85 | -0.01 |
| Apr | 1.74 | 1.85 | -0.11 |
| May | 2.64 | 2.65 | -0.01 |
| Jun | 2.75 | 2.70 | 0.05 |
| Jul | 3.08 | 3.07 | 0.01 |
| Aug | 2.69 | 2.63 | 0.06 |
| Sep | 1.39 | 1.42 | -0.03 |
| Oct | 1.32 | 1.37 | -0.05 |
| Nov | 0.55 | 0.55 | 0.00 |
| Dec | 0.45 | 0.45 | 0.00 |
18.29 | 18.40 | -0.11 |