| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.73 | 0.86 | -0.13 |
| Feb | 0.71 | 0.77 | -0.06 |
| Mar | 1.07 | 1.11 | -0.04 |
| Apr | 1.85 | 2.02 | -0.17 |
| May | 3.01 | 3.11 | -0.10 |
| Jun | 4.43 | 4.47 | -0.04 |
| Jul | 3.77 | 4.14 | -0.37 |
| Aug | 3.36 | 3.43 | -0.07 |
| Sep | 3.24 | 3.47 | -0.23 |
| Oct | 2.60 | 2.77 | -0.17 |
| Nov | 1.36 | 1.46 | -0.10 |
| Dec | 0.99 | 1.21 | -0.22 |
27.12 | 28.82 | -1.70 |