| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 11.35 | 11.86 | -0.51 |
| Feb | 8.79 | 9.71 | -0.92 |
| Mar | 9.37 | 10.37 | -1.00 |
| Apr | 6.62 | 7.16 | -0.54 |
| May | 3.40 | 3.46 | -0.06 |
| Jun | 1.54 | 1.74 | -0.20 |
| Jul | 0.26 | 0.29 | -0.03 |
| Aug | 0.38 | 0.39 | -0.01 |
| Sep | 1.24 | 1.38 | -0.14 |
| Oct | 4.77 | 5.05 | -0.28 |
| Nov | 9.10 | 9.83 | -0.73 |
| Dec | 13.58 | 14.40 | -0.82 |
70.40 | 75.64 | -5.24 |