| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.62 | 3.50 | 0.12 |
| Feb | 3.02 | 2.92 | 0.10 |
| Mar | 3.96 | 3.91 | 0.05 |
| Apr | 3.56 | 3.57 | -0.01 |
| May | 3.70 | 3.56 | 0.14 |
| Jun | 4.59 | 4.61 | -0.02 |
| Jul | 5.04 | 4.92 | 0.12 |
| Aug | 4.84 | 4.83 | 0.01 |
| Sep | 5.00 | 5.21 | -0.21 |
| Oct | 3.49 | 3.61 | -0.12 |
| Nov | 3.43 | 3.35 | 0.08 |
| Dec | 3.47 | 3.46 | 0.01 |
47.72 | 47.45 | 0.27 |