| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.94 | 0.97 | -0.03 |
| Feb | 1.13 | 1.14 | -0.01 |
| Mar | 1.38 | 1.42 | -0.04 |
| Apr | 1.71 | 2.01 | -0.30 |
| May | 2.65 | 2.71 | -0.06 |
| Jun | 2.76 | 3.10 | -0.34 |
| Jul | 1.29 | 1.50 | -0.21 |
| Aug | 1.23 | 1.19 | 0.04 |
| Sep | 1.32 | 1.52 | -0.20 |
| Oct | 1.42 | 1.53 | -0.11 |
| Nov | 1.23 | 1.28 | -0.05 |
| Dec | 1.09 | 1.07 | 0.02 |
18.15 | 19.44 | -1.29 |