| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.30 | 3.52 | -0.22 |
| Feb | 3.00 | 3.06 | -0.06 |
| Mar | 3.99 | 4.11 | -0.12 |
| Apr | 4.52 | 4.71 | -0.19 |
| May | 4.86 | 4.90 | -0.04 |
| Jun | 4.86 | 4.69 | 0.17 |
| Jul | 4.31 | 4.17 | 0.14 |
| Aug | 3.47 | 3.37 | 0.10 |
| Sep | 3.22 | 3.25 | -0.03 |
| Oct | 3.25 | 3.30 | -0.05 |
| Nov | 3.18 | 3.23 | -0.05 |
| Dec | 3.61 | 3.78 | -0.17 |
45.57 | 46.09 | -0.52 |