| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.55 | 3.62 | -0.07 |
| Feb | 3.57 | 3.62 | -0.05 |
| Mar | 4.45 | 4.56 | -0.11 |
| Apr | 4.88 | 5.02 | -0.14 |
| May | 5.00 | 5.28 | -0.28 |
| Jun | 4.29 | 4.62 | -0.33 |
| Jul | 4.25 | 4.32 | -0.07 |
| Aug | 3.06 | 3.03 | 0.03 |
| Sep | 3.46 | 3.51 | -0.05 |
| Oct | 3.62 | 3.68 | -0.06 |
| Nov | 3.87 | 3.82 | 0.05 |
| Dec | 4.26 | 4.30 | -0.04 |
48.26 | 49.38 | -1.12 |