| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.66 | 3.64 | 0.02 |
| Feb | 4.10 | 4.03 | 0.07 |
| Mar | 5.01 | 5.02 | -0.01 |
| Apr | 5.54 | 5.43 | 0.11 |
| May | 5.39 | 5.62 | -0.23 |
| Jun | 3.39 | 3.35 | 0.04 |
| Jul | 3.59 | 3.60 | -0.01 |
| Aug | 3.41 | 3.32 | 0.09 |
| Sep | 3.59 | 3.40 | 0.19 |
| Oct | 4.11 | 4.05 | 0.06 |
| Nov | 4.68 | 4.90 | -0.22 |
| Dec | 5.09 | 5.16 | -0.07 |
51.56 | 51.52 | 0.04 |