| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.35 | 0.32 | 0.03 |
| Feb | 0.56 | 0.53 | 0.03 |
| Mar | 1.07 | 0.96 | 0.11 |
| Apr | 2.04 | 1.98 | 0.06 |
| May | 3.09 | 2.92 | 0.17 |
| Jun | 2.92 | 3.00 | -0.08 |
| Jul | 2.79 | 2.53 | 0.26 |
| Aug | 2.08 | 2.04 | 0.04 |
| Sep | 1.65 | 1.64 | 0.01 |
| Oct | 1.37 | 1.33 | 0.04 |
| Nov | 0.61 | 0.55 | 0.06 |
| Dec | 0.48 | 0.50 | -0.02 |
19.01 | 18.30 | 0.71 |