| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.35 | 0.32 | 0.03 |
| Feb | 0.43 | 0.46 | -0.03 |
| Mar | 0.86 | 0.89 | -0.03 |
| Apr | 1.63 | 1.57 | 0.06 |
| May | 2.45 | 2.39 | 0.06 |
| Jun | 2.75 | 2.64 | 0.11 |
| Jul | 3.33 | 3.23 | 0.10 |
| Aug | 2.91 | 2.79 | 0.12 |
| Sep | 1.33 | 1.31 | 0.02 |
| Oct | 1.30 | 1.34 | -0.04 |
| Nov | 0.54 | 0.50 | 0.04 |
| Dec | 0.42 | 0.44 | -0.02 |
18.30 | 17.88 | 0.42 |