| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.22 | 2.31 | -0.09 |
| Feb | 2.06 | 2.17 | -0.11 |
| Mar | 3.08 | 3.05 | 0.03 |
| Apr | 4.33 | 4.21 | 0.12 |
| May | 4.82 | 4.84 | -0.02 |
| Jun | 4.31 | 4.26 | 0.05 |
| Jul | 3.95 | 3.93 | 0.02 |
| Aug | 3.54 | 3.43 | 0.11 |
| Sep | 3.29 | 3.25 | 0.04 |
| Oct | 3.10 | 3.11 | -0.01 |
| Nov | 3.09 | 3.19 | -0.10 |
| Dec | 2.30 | 2.45 | -0.15 |
40.09 | 40.20 | -0.11 |