| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.36 | 3.39 | -0.03 |
| Feb | 3.27 | 3.54 | -0.27 |
| Mar | 4.60 | 4.63 | -0.03 |
| Apr | 4.42 | 4.52 | -0.10 |
| May | 5.10 | 5.24 | -0.14 |
| Jun | 4.81 | 4.89 | -0.08 |
| Jul | 5.17 | 4.78 | 0.39 |
| Aug | 3.44 | 3.35 | 0.09 |
| Sep | 3.62 | 3.40 | 0.22 |
| Oct | 3.41 | 3.44 | -0.03 |
| Nov | 3.18 | 3.09 | 0.09 |
| Dec | 3.90 | 4.03 | -0.13 |
48.28 | 48.30 | -0.02 |