| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.35 | 3.61 | -0.26 |
| Feb | 2.82 | 3.04 | -0.22 |
| Mar | 4.09 | 4.29 | -0.20 |
| Apr | 3.98 | 4.07 | -0.09 |
| May | 3.80 | 3.88 | -0.08 |
| Jun | 4.29 | 4.48 | -0.19 |
| Jul | 4.36 | 4.37 | -0.01 |
| Aug | 4.18 | 4.37 | -0.19 |
| Sep | 4.32 | 4.55 | -0.23 |
| Oct | 4.26 | 4.28 | -0.02 |
| Nov | 3.53 | 3.60 | -0.07 |
| Dec | 4.16 | 4.47 | -0.31 |
47.14 | 49.01 | -1.87 |