| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.34 | 4.86 | -0.52 |
| Feb | 3.85 | 4.26 | -0.41 |
| Mar | 3.57 | 3.72 | -0.15 |
| Apr | 1.93 | 2.00 | -0.07 |
| May | 0.89 | 1.04 | -0.15 |
| Jun | 0.24 | 0.32 | -0.08 |
| Jul | 0.03 | 0.09 | -0.06 |
| Aug | 0.01 | 0.02 | -0.01 |
| Sep | 0.12 | 0.13 | -0.01 |
| Oct | 1.05 | 1.21 | -0.16 |
| Nov | 1.86 | 1.80 | 0.06 |
| Dec | 3.64 | 4.04 | -0.40 |
21.53 | 23.49 | -1.96 |