| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.04 | 3.97 | 0.07 |
| Feb | 3.81 | 3.82 | -0.01 |
| Mar | 2.73 | 2.72 | 0.01 |
| Apr | 1.26 | 1.21 | 0.05 |
| May | 0.71 | 0.65 | 0.06 |
| Jun | 0.16 | 0.22 | -0.06 |
| Jul | 0.00 | 0.00 | 0.00 |
| Aug | 0.02 | 0.03 | -0.01 |
| Sep | 0.10 | 0.10 | 0.00 |
| Oct | 0.83 | 0.77 | 0.06 |
| Nov | 1.79 | 1.78 | 0.01 |
| Dec | 3.65 | 3.67 | -0.02 |
19.10 | 18.94 | 0.16 |