| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.25 | 4.58 | -0.33 |
| Feb | 4.00 | 4.12 | -0.12 |
| Mar | 4.62 | 4.70 | -0.08 |
| Apr | 3.86 | 4.12 | -0.26 |
| May | 3.96 | 4.02 | -0.06 |
| Jun | 4.26 | 4.30 | -0.04 |
| Jul | 4.18 | 4.41 | -0.23 |
| Aug | 4.66 | 4.82 | -0.16 |
| Sep | 3.85 | 3.93 | -0.08 |
| Oct | 3.41 | 3.63 | -0.22 |
| Nov | 3.71 | 4.00 | -0.29 |
| Dec | 4.61 | 5.03 | -0.42 |
49.37 | 51.66 | -2.29 |