| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.52 | 0.47 | 0.05 |
| Feb | 0.56 | 0.54 | 0.02 |
| Mar | 0.87 | 0.88 | -0.01 |
| Apr | 1.82 | 1.79 | 0.03 |
| May | 3.08 | 3.28 | -0.20 |
| Jun | 3.63 | 3.64 | -0.01 |
| Jul | 3.24 | 3.30 | -0.06 |
| Aug | 2.34 | 2.49 | -0.15 |
| Sep | 2.15 | 2.22 | -0.07 |
| Oct | 1.94 | 1.92 | 0.02 |
| Nov | 0.69 | 0.66 | 0.03 |
| Dec | 0.57 | 0.58 | -0.01 |
21.41 | 21.77 | -0.36 |