| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.62 | 0.63 | -0.01 |
| Feb | 0.69 | 0.70 | -0.01 |
| Mar | 1.44 | 1.52 | -0.08 |
| Apr | 2.71 | 2.70 | 0.01 |
| May | 4.83 | 4.89 | -0.06 |
| Jun | 4.14 | 4.07 | 0.07 |
| Jul | 3.37 | 3.41 | -0.04 |
| Aug | 3.50 | 3.45 | 0.05 |
| Sep | 2.46 | 2.37 | 0.09 |
| Oct | 2.16 | 2.13 | 0.03 |
| Nov | 1.27 | 1.25 | 0.02 |
| Dec | 0.90 | 0.94 | -0.04 |
28.09 | 28.06 | 0.03 |