| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.04 | 4.21 | -0.17 |
| Feb | 4.14 | 3.89 | 0.25 |
| Mar | 3.21 | 3.40 | -0.19 |
| Apr | 1.57 | 1.67 | -0.10 |
| May | 0.76 | 0.78 | -0.02 |
| Jun | 0.15 | 0.21 | -0.06 |
| Jul | 0.00 | 0.01 | -0.01 |
| Aug | 0.02 | 0.04 | -0.02 |
| Sep | 0.11 | 0.10 | 0.01 |
| Oct | 1.03 | 1.04 | -0.01 |
| Nov | 2.29 | 2.30 | -0.01 |
| Dec | 4.37 | 4.53 | -0.16 |
21.69 | 22.18 | -0.49 |