| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.85 | 4.80 | 0.05 |
| Feb | 4.84 | 4.79 | 0.05 |
| Mar | 5.00 | 4.90 | 0.10 |
| Apr | 4.16 | 4.20 | -0.04 |
| May | 4.03 | 4.07 | -0.04 |
| Jun | 4.42 | 4.17 | 0.25 |
| Jul | 4.87 | 4.75 | 0.12 |
| Aug | 4.26 | 4.25 | 0.01 |
| Sep | 4.07 | 3.98 | 0.09 |
| Oct | 3.56 | 3.47 | 0.09 |
| Nov | 4.22 | 4.20 | 0.02 |
| Dec | 4.79 | 4.68 | 0.11 |
53.07 | 52.26 | 0.81 |