| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.53 | 2.50 | 0.03 |
| Feb | 2.03 | 2.08 | -0.05 |
| Mar | 2.65 | 2.68 | -0.03 |
| Apr | 3.85 | 3.79 | 0.06 |
| May | 4.51 | 4.54 | -0.03 |
| Jun | 4.39 | 4.28 | 0.11 |
| Jul | 4.23 | 4.16 | 0.07 |
| Aug | 3.91 | 3.82 | 0.09 |
| Sep | 3.09 | 3.03 | 0.06 |
| Oct | 2.93 | 2.84 | 0.09 |
| Nov | 3.01 | 2.98 | 0.03 |
| Dec | 2.38 | 2.39 | -0.01 |
39.51 | 39.09 | 0.42 |