| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.04 | 4.25 | -0.21 |
| Feb | 3.98 | 3.99 | -0.01 |
| Mar | 3.13 | 3.57 | -0.44 |
| Apr | 1.56 | 1.74 | -0.18 |
| May | 0.97 | 1.05 | -0.08 |
| Jun | 0.29 | 0.31 | -0.02 |
| Jul | 0.00 | 0.00 | 0.00 |
| Aug | 0.03 | 0.04 | -0.01 |
| Sep | 0.14 | 0.14 | 0.00 |
| Oct | 1.14 | 1.16 | -0.02 |
| Nov | 2.18 | 2.31 | -0.13 |
| Dec | 3.68 | 3.92 | -0.24 |
21.14 | 22.48 | -1.34 |