| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.68 | 3.99 | -0.31 |
| Feb | 2.76 | 3.03 | -0.27 |
| Mar | 4.17 | 4.62 | -0.45 |
| Apr | 4.02 | 4.12 | -0.10 |
| May | 3.93 | 4.03 | -0.10 |
| Jun | 4.71 | 4.92 | -0.21 |
| Jul | 4.33 | 4.46 | -0.13 |
| Aug | 4.46 | 4.67 | -0.21 |
| Sep | 4.53 | 4.90 | -0.37 |
| Oct | 4.67 | 4.79 | -0.12 |
| Nov | 3.68 | 3.91 | -0.23 |
| Dec | 4.35 | 4.69 | -0.34 |
49.29 | 52.13 | -2.84 |