| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.36 | 0.21 |
| Feb | 3.01 | 2.89 | 0.12 |
| Mar | 3.91 | 3.87 | 0.04 |
| Apr | 3.56 | 3.57 | -0.01 |
| May | 3.68 | 3.47 | 0.21 |
| Jun | 4.52 | 4.52 | 0.00 |
| Jul | 5.05 | 4.85 | 0.20 |
| Aug | 4.80 | 4.89 | -0.09 |
| Sep | 4.89 | 5.13 | -0.24 |
| Oct | 3.45 | 3.57 | -0.12 |
| Nov | 3.42 | 3.30 | 0.12 |
| Dec | 3.46 | 3.42 | 0.04 |
47.32 | 46.84 | 0.48 |