| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.45 | -0.06 |
| Feb | 0.45 | 0.44 | 0.01 |
| Mar | 0.75 | 0.80 | -0.05 |
| Apr | 1.23 | 1.22 | 0.01 |
| May | 3.17 | 3.22 | -0.05 |
| Jun | 3.46 | 3.56 | -0.10 |
| Jul | 3.48 | 3.59 | -0.11 |
| Aug | 2.40 | 2.34 | 0.06 |
| Sep | 2.12 | 2.28 | -0.16 |
| Oct | 1.73 | 1.77 | -0.04 |
| Nov | 0.58 | 0.61 | -0.03 |
| Dec | 0.52 | 0.57 | -0.05 |
20.28 | 20.85 | -0.57 |