| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.00 | 4.05 | -0.05 |
| Feb | 3.83 | 3.79 | 0.04 |
| Mar | 2.93 | 3.02 | -0.09 |
| Apr | 1.63 | 1.64 | -0.01 |
| May | 1.18 | 0.88 | 0.30 |
| Jun | 0.22 | 0.22 | 0.00 |
| Jul | 0.01 | 0.00 | 0.01 |
| Aug | 0.02 | 0.03 | -0.01 |
| Sep | 0.08 | 0.12 | -0.04 |
| Oct | 0.93 | 1.03 | -0.10 |
| Nov | 1.87 | 1.89 | -0.02 |
| Dec | 3.32 | 3.73 | -0.41 |
20.02 | 20.40 | -0.38 |