| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.38 | 0.39 | -0.01 |
| Feb | 0.57 | 0.48 | 0.09 |
| Mar | 0.84 | 0.76 | 0.08 |
| Apr | 1.81 | 1.68 | 0.13 |
| May | 3.00 | 3.06 | -0.06 |
| Jun | 3.27 | 3.47 | -0.20 |
| Jul | 2.49 | 2.33 | 0.16 |
| Aug | 2.02 | 1.94 | 0.08 |
| Sep | 1.51 | 1.60 | -0.09 |
| Oct | 1.54 | 1.50 | 0.04 |
| Nov | 0.50 | 0.42 | 0.08 |
| Dec | 0.45 | 0.41 | 0.04 |
18.38 | 18.04 | 0.34 |