| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.79 | 3.68 | 0.11 |
| Feb | 3.32 | 3.29 | 0.03 |
| Mar | 4.33 | 4.23 | 0.10 |
| Apr | 4.21 | 4.09 | 0.12 |
| May | 4.10 | 4.04 | 0.06 |
| Jun | 4.79 | 4.77 | 0.02 |
| Jul | 4.55 | 4.38 | 0.17 |
| Aug | 4.64 | 4.56 | 0.08 |
| Sep | 4.90 | 4.85 | 0.05 |
| Oct | 5.35 | 5.30 | 0.05 |
| Nov | 4.06 | 3.96 | 0.10 |
| Dec | 4.72 | 4.72 | 0.00 |
52.76 | 51.87 | 0.89 |