| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.49 | 3.69 | -0.20 |
| Feb | 2.92 | 3.15 | -0.23 |
| Mar | 4.17 | 4.24 | -0.07 |
| Apr | 4.11 | 4.28 | -0.17 |
| May | 3.87 | 3.89 | -0.02 |
| Jun | 4.42 | 4.43 | -0.01 |
| Jul | 4.04 | 3.96 | 0.08 |
| Aug | 4.05 | 4.18 | -0.13 |
| Sep | 4.49 | 4.52 | -0.03 |
| Oct | 4.48 | 4.45 | 0.03 |
| Nov | 3.58 | 3.68 | -0.10 |
| Dec | 4.14 | 4.38 | -0.24 |
47.76 | 48.85 | -1.09 |