| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.42 | 0.39 | 0.03 |
| Feb | 0.62 | 0.60 | 0.02 |
| Mar | 0.96 | 0.91 | 0.05 |
| Apr | 2.04 | 1.80 | 0.24 |
| May | 3.26 | 3.39 | -0.13 |
| Jun | 3.25 | 3.19 | 0.06 |
| Jul | 2.42 | 2.46 | -0.04 |
| Aug | 1.90 | 2.01 | -0.11 |
| Sep | 1.33 | 1.44 | -0.11 |
| Oct | 1.62 | 1.56 | 0.06 |
| Nov | 0.54 | 0.49 | 0.05 |
| Dec | 0.53 | 0.49 | 0.04 |
18.89 | 18.73 | 0.16 |