| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.23 | 2.27 | -0.04 |
| Feb | 1.98 | 2.04 | -0.06 |
| Mar | 2.63 | 2.68 | -0.05 |
| Apr | 4.04 | 3.99 | 0.05 |
| May | 4.41 | 4.38 | 0.03 |
| Jun | 4.64 | 4.61 | 0.03 |
| Jul | 4.23 | 4.12 | 0.11 |
| Aug | 3.23 | 3.12 | 0.11 |
| Sep | 3.11 | 3.11 | 0.00 |
| Oct | 3.27 | 3.24 | 0.03 |
| Nov | 3.18 | 3.15 | 0.03 |
| Dec | 2.31 | 2.39 | -0.08 |
39.26 | 39.10 | 0.16 |