| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.81 | 4.16 | -0.35 |
| Feb | 3.37 | 3.69 | -0.32 |
| Mar | 4.86 | 5.44 | -0.58 |
| Apr | 4.34 | 4.78 | -0.44 |
| May | 3.50 | 3.66 | -0.16 |
| Jun | 3.68 | 3.99 | -0.31 |
| Jul | 3.12 | 3.24 | -0.12 |
| Aug | 3.70 | 4.06 | -0.36 |
| Sep | 3.91 | 4.07 | -0.16 |
| Oct | 4.66 | 4.88 | -0.22 |
| Nov | 4.01 | 4.34 | -0.33 |
| Dec | 4.74 | 5.21 | -0.47 |
47.70 | 51.52 | -3.82 |