| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.64 | 4.76 | -0.12 |
| Feb | 4.75 | 4.90 | -0.15 |
| Mar | 4.99 | 5.02 | -0.03 |
| Apr | 4.12 | 4.32 | -0.20 |
| May | 3.68 | 3.65 | 0.03 |
| Jun | 4.31 | 4.32 | -0.01 |
| Jul | 4.87 | 4.89 | -0.02 |
| Aug | 4.15 | 4.48 | -0.33 |
| Sep | 3.67 | 3.77 | -0.10 |
| Oct | 3.25 | 3.26 | -0.01 |
| Nov | 4.04 | 4.14 | -0.10 |
| Dec | 4.77 | 4.90 | -0.13 |
51.24 | 52.41 | -1.17 |