| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.84 | 4.12 | -0.28 |
| Feb | 3.49 | 3.68 | -0.19 |
| Mar | 4.99 | 5.35 | -0.36 |
| Apr | 4.34 | 4.57 | -0.23 |
| May | 3.41 | 3.38 | 0.03 |
| Jun | 3.65 | 3.75 | -0.10 |
| Jul | 3.19 | 3.11 | 0.08 |
| Aug | 3.60 | 3.67 | -0.07 |
| Sep | 3.99 | 3.78 | 0.21 |
| Oct | 4.42 | 4.64 | -0.22 |
| Nov | 4.14 | 4.12 | 0.02 |
| Dec | 4.64 | 5.09 | -0.45 |
47.70 | 49.26 | -1.56 |