| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.40 | 0.39 | 0.01 |
| Feb | 0.49 | 0.53 | -0.04 |
| Mar | 0.96 | 0.97 | -0.01 |
| Apr | 2.07 | 2.08 | -0.01 |
| May | 2.88 | 2.99 | -0.11 |
| Jun | 3.11 | 3.08 | 0.03 |
| Jul | 3.32 | 3.23 | 0.09 |
| Aug | 2.92 | 2.86 | 0.06 |
| Sep | 1.51 | 1.50 | 0.01 |
| Oct | 1.50 | 1.51 | -0.01 |
| Nov | 0.70 | 0.65 | 0.05 |
| Dec | 0.52 | 0.51 | 0.01 |
20.38 | 20.30 | 0.08 |