| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.40 | 3.42 | -0.02 |
| Feb | 3.01 | 3.17 | -0.16 |
| Mar | 3.83 | 3.71 | 0.12 |
| Apr | 3.96 | 3.86 | 0.10 |
| May | 4.18 | 3.96 | 0.22 |
| Jun | 4.33 | 4.52 | -0.19 |
| Jul | 4.33 | 4.31 | 0.02 |
| Aug | 3.91 | 4.16 | -0.25 |
| Sep | 3.91 | 3.79 | 0.12 |
| Oct | 3.31 | 3.29 | 0.02 |
| Nov | 3.28 | 3.25 | 0.03 |
| Dec | 3.56 | 3.58 | -0.02 |
45.01 | 45.02 | -0.01 |