| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.66 | 0.66 | 0.00 |
| Feb | 0.81 | 0.84 | -0.03 |
| Mar | 1.69 | 1.68 | 0.01 |
| Apr | 2.44 | 2.75 | -0.31 |
| May | 2.68 | 2.73 | -0.05 |
| Jun | 1.84 | 1.79 | 0.05 |
| Jul | 2.00 | 1.88 | 0.12 |
| Aug | 1.84 | 1.74 | 0.10 |
| Sep | 1.43 | 1.36 | 0.07 |
| Oct | 1.20 | 1.39 | -0.19 |
| Nov | 0.95 | 0.98 | -0.03 |
| Dec | 0.64 | 0.74 | -0.10 |
18.18 | 18.54 | -0.36 |