| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.36 | 0.35 | 0.01 |
| Feb | 0.56 | 0.62 | -0.06 |
| Mar | 0.97 | 0.96 | 0.01 |
| Apr | 2.18 | 2.24 | -0.06 |
| May | 3.19 | 3.23 | -0.04 |
| Jun | 3.46 | 3.53 | -0.07 |
| Jul | 3.02 | 3.10 | -0.08 |
| Aug | 2.23 | 2.32 | -0.09 |
| Sep | 1.60 | 1.59 | 0.01 |
| Oct | 1.57 | 1.68 | -0.11 |
| Nov | 0.51 | 0.52 | -0.01 |
| Dec | 0.38 | 0.34 | 0.04 |
20.03 | 20.48 | -0.45 |