| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.84 | 4.19 | -0.35 |
| Feb | 3.55 | 3.93 | -0.38 |
| Mar | 2.97 | 3.00 | -0.03 |
| Apr | 1.49 | 1.31 | 0.18 |
| May | 1.30 | 1.11 | 0.19 |
| Jun | 0.60 | 0.65 | -0.05 |
| Jul | 0.34 | 0.21 | 0.13 |
| Aug | 0.30 | 0.24 | 0.06 |
| Sep | 0.39 | 0.37 | 0.02 |
| Oct | 1.34 | 1.44 | -0.10 |
| Nov | 2.20 | 1.98 | 0.22 |
| Dec | 4.00 | 4.13 | -0.13 |
22.32 | 22.56 | -0.24 |