| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.96 | 4.08 | -0.12 |
| Feb | 3.39 | 3.41 | -0.02 |
| Mar | 4.41 | 4.45 | -0.04 |
| Apr | 4.13 | 4.28 | -0.15 |
| May | 3.75 | 4.22 | -0.47 |
| Jun | 4.35 | 4.34 | 0.01 |
| Jul | 4.05 | 4.11 | -0.06 |
| Aug | 4.38 | 4.52 | -0.14 |
| Sep | 3.97 | 3.86 | 0.11 |
| Oct | 3.48 | 3.64 | -0.16 |
| Nov | 3.67 | 3.80 | -0.13 |
| Dec | 4.16 | 4.24 | -0.08 |
47.70 | 48.95 | -1.25 |