| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.43 | 0.41 | 0.02 |
| Feb | 0.54 | 0.51 | 0.03 |
| Mar | 1.09 | 0.99 | 0.10 |
| Apr | 2.04 | 1.88 | 0.16 |
| May | 3.15 | 2.97 | 0.18 |
| Jun | 3.10 | 3.06 | 0.04 |
| Jul | 2.23 | 2.00 | 0.23 |
| Aug | 1.67 | 1.55 | 0.12 |
| Sep | 1.42 | 1.36 | 0.06 |
| Oct | 1.42 | 1.37 | 0.05 |
| Nov | 0.54 | 0.56 | -0.02 |
| Dec | 0.46 | 0.41 | 0.05 |
18.09 | 17.07 | 1.02 |