| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.88 | 4.81 | 0.07 |
| Feb | 4.86 | 4.77 | 0.09 |
| Mar | 5.08 | 4.90 | 0.18 |
| Apr | 4.21 | 4.22 | -0.01 |
| May | 3.98 | 4.08 | -0.10 |
| Jun | 4.30 | 4.08 | 0.22 |
| Jul | 4.77 | 4.70 | 0.07 |
| Aug | 4.17 | 4.12 | 0.05 |
| Sep | 4.07 | 3.90 | 0.17 |
| Oct | 3.53 | 3.38 | 0.15 |
| Nov | 4.21 | 4.17 | 0.04 |
| Dec | 4.78 | 4.65 | 0.13 |
52.84 | 51.78 | 1.06 |