| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.36 | 3.52 | -0.16 |
| Feb | 3.18 | 3.19 | -0.01 |
| Mar | 4.24 | 4.39 | -0.15 |
| Apr | 4.88 | 4.97 | -0.09 |
| May | 5.26 | 5.32 | -0.06 |
| Jun | 4.79 | 4.83 | -0.04 |
| Jul | 4.42 | 4.51 | -0.09 |
| Aug | 3.65 | 3.61 | 0.04 |
| Sep | 3.42 | 3.63 | -0.21 |
| Oct | 3.35 | 3.44 | -0.09 |
| Nov | 3.34 | 3.46 | -0.12 |
| Dec | 3.91 | 4.05 | -0.14 |
47.80 | 48.92 | -1.12 |