| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.30 | 4.19 | 0.11 |
| Feb | 4.14 | 4.02 | 0.12 |
| Mar | 3.27 | 3.30 | -0.03 |
| Apr | 2.01 | 1.85 | 0.16 |
| May | 1.08 | 1.04 | 0.04 |
| Jun | 0.23 | 0.26 | -0.03 |
| Jul | 0.01 | 0.00 | 0.01 |
| Aug | 0.02 | 0.03 | -0.01 |
| Sep | 0.10 | 0.12 | -0.02 |
| Oct | 1.00 | 1.10 | -0.10 |
| Nov | 2.12 | 2.08 | 0.04 |
| Dec | 3.68 | 3.94 | -0.26 |
21.96 | 21.93 | 0.03 |