| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.84 | 3.81 | 0.03 |
| Feb | 3.34 | 3.26 | 0.08 |
| Mar | 3.84 | 3.79 | 0.05 |
| Apr | 3.35 | 3.47 | -0.12 |
| May | 3.96 | 4.16 | -0.20 |
| Jun | 5.08 | 5.07 | 0.01 |
| Jul | 5.61 | 5.60 | 0.01 |
| Aug | 6.34 | 6.14 | 0.20 |
| Sep | 6.18 | 6.14 | 0.04 |
| Oct | 3.83 | 4.09 | -0.26 |
| Nov | 3.33 | 3.32 | 0.01 |
| Dec | 3.66 | 3.53 | 0.13 |
52.36 | 52.38 | -0.02 |