| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.60 | 0.56 | 0.04 |
| Feb | 0.81 | 0.79 | 0.02 |
| Mar | 1.50 | 1.49 | 0.01 |
| Apr | 3.18 | 3.11 | 0.07 |
| May | 3.67 | 3.74 | -0.07 |
| Jun | 4.04 | 4.05 | -0.01 |
| Jul | 3.26 | 3.22 | 0.04 |
| Aug | 3.26 | 3.17 | 0.09 |
| Sep | 2.90 | 2.85 | 0.05 |
| Oct | 2.42 | 2.44 | -0.02 |
| Nov | 1.18 | 1.14 | 0.04 |
| Dec | 0.86 | 0.85 | 0.01 |
27.68 | 27.41 | 0.27 |