| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.56 | 0.55 | 0.01 |
| Feb | 0.76 | 0.72 | 0.04 |
| Mar | 1.49 | 1.46 | 0.03 |
| Apr | 2.90 | 2.81 | 0.09 |
| May | 4.06 | 4.16 | -0.10 |
| Jun | 4.23 | 4.37 | -0.14 |
| Jul | 3.06 | 3.16 | -0.10 |
| Aug | 3.52 | 3.67 | -0.15 |
| Sep | 2.44 | 2.53 | -0.09 |
| Oct | 2.27 | 2.25 | 0.02 |
| Nov | 1.18 | 1.19 | -0.01 |
| Dec | 0.84 | 0.85 | -0.01 |
27.31 | 27.72 | -0.41 |