| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.89 | 0.93 | -0.04 |
| Feb | 0.84 | 0.80 | 0.04 |
| Mar | 1.04 | 1.12 | -0.08 |
| Apr | 1.95 | 1.97 | -0.02 |
| May | 3.04 | 3.11 | -0.07 |
| Jun | 4.12 | 4.09 | 0.03 |
| Jul | 3.94 | 3.92 | 0.02 |
| Aug | 3.36 | 3.13 | 0.23 |
| Sep | 3.56 | 3.55 | 0.01 |
| Oct | 2.74 | 2.63 | 0.11 |
| Nov | 1.52 | 1.45 | 0.07 |
| Dec | 1.10 | 1.15 | -0.05 |
28.10 | 27.85 | 0.25 |