| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.43 | -0.04 |
| Feb | 0.58 | 0.50 | 0.08 |
| Mar | 0.87 | 0.79 | 0.08 |
| Apr | 1.89 | 1.80 | 0.09 |
| May | 3.01 | 3.11 | -0.10 |
| Jun | 3.24 | 3.47 | -0.23 |
| Jul | 2.44 | 2.36 | 0.08 |
| Aug | 1.97 | 1.89 | 0.08 |
| Sep | 1.51 | 1.66 | -0.15 |
| Oct | 1.54 | 1.51 | 0.03 |
| Nov | 0.52 | 0.46 | 0.06 |
| Dec | 0.46 | 0.42 | 0.04 |
18.42 | 18.40 | 0.02 |