| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.81 | 0.90 | -0.09 |
| Feb | 0.82 | 0.90 | -0.08 |
| Mar | 1.62 | 1.70 | -0.08 |
| Apr | 2.92 | 2.97 | -0.05 |
| May | 4.15 | 4.32 | -0.17 |
| Jun | 4.86 | 5.01 | -0.15 |
| Jul | 4.22 | 4.23 | -0.01 |
| Aug | 4.54 | 4.66 | -0.12 |
| Sep | 3.23 | 3.37 | -0.14 |
| Oct | 2.63 | 2.66 | -0.03 |
| Nov | 1.56 | 1.63 | -0.07 |
| Dec | 1.13 | 1.23 | -0.10 |
32.49 | 33.58 | -1.09 |