| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.82 | 3.79 | 0.03 |
| Feb | 3.36 | 3.27 | 0.09 |
| Mar | 3.86 | 3.85 | 0.01 |
| Apr | 3.39 | 3.47 | -0.08 |
| May | 4.03 | 4.22 | -0.19 |
| Jun | 5.08 | 5.00 | 0.08 |
| Jul | 5.62 | 5.49 | 0.13 |
| Aug | 6.35 | 6.00 | 0.35 |
| Sep | 6.30 | 6.26 | 0.04 |
| Oct | 3.82 | 4.13 | -0.31 |
| Nov | 3.32 | 3.30 | 0.02 |
| Dec | 3.66 | 3.51 | 0.15 |
52.61 | 52.29 | 0.32 |