| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.54 | 1.52 | 0.02 |
| Feb | 1.69 | 1.70 | -0.01 |
| Mar | 2.42 | 2.28 | 0.14 |
| Apr | 3.68 | 3.67 | 0.01 |
| May | 4.44 | 4.40 | 0.04 |
| Jun | 5.20 | 5.14 | 0.06 |
| Jul | 4.46 | 4.32 | 0.14 |
| Aug | 4.02 | 3.82 | 0.20 |
| Sep | 3.63 | 3.53 | 0.10 |
| Oct | 2.87 | 2.79 | 0.08 |
| Nov | 2.38 | 2.27 | 0.11 |
| Dec | 1.85 | 1.90 | -0.05 |
38.18 | 37.34 | 0.84 |