| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.19 | 4.06 | 0.13 |
| Feb | 4.11 | 3.87 | 0.24 |
| Mar | 3.18 | 3.07 | 0.11 |
| Apr | 1.88 | 1.69 | 0.19 |
| May | 1.17 | 0.91 | 0.26 |
| Jun | 0.24 | 0.23 | 0.01 |
| Jul | 0.01 | 0.00 | 0.01 |
| Aug | 0.02 | 0.03 | -0.01 |
| Sep | 0.08 | 0.12 | -0.04 |
| Oct | 0.97 | 1.04 | -0.07 |
| Nov | 1.97 | 1.95 | 0.02 |
| Dec | 3.46 | 3.79 | -0.33 |
21.28 | 20.76 | 0.52 |