| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.30 | 4.27 | 0.03 |
| Feb | 4.35 | 4.27 | 0.08 |
| Mar | 4.73 | 4.67 | 0.06 |
| Apr | 3.60 | 3.56 | 0.04 |
| May | 3.12 | 3.00 | 0.12 |
| Jun | 4.03 | 4.43 | -0.40 |
| Jul | 4.13 | 4.04 | 0.09 |
| Aug | 4.49 | 4.44 | 0.05 |
| Sep | 3.91 | 3.99 | -0.08 |
| Oct | 2.97 | 2.87 | 0.10 |
| Nov | 3.37 | 3.39 | -0.02 |
| Dec | 4.46 | 4.45 | 0.01 |
47.46 | 47.38 | 0.08 |