| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.75 | 0.86 | -0.11 |
| Feb | 0.74 | 0.76 | -0.02 |
| Mar | 1.18 | 1.19 | -0.01 |
| Apr | 1.93 | 2.05 | -0.12 |
| May | 3.09 | 3.17 | -0.08 |
| Jun | 4.46 | 4.50 | -0.04 |
| Jul | 3.94 | 4.05 | -0.11 |
| Aug | 3.36 | 3.31 | 0.05 |
| Sep | 2.98 | 3.24 | -0.26 |
| Oct | 2.68 | 2.73 | -0.05 |
| Nov | 1.36 | 1.44 | -0.08 |
| Dec | 1.02 | 1.11 | -0.09 |
27.49 | 28.41 | -0.92 |