| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.73 | 4.10 | -0.37 |
| Feb | 3.30 | 3.63 | -0.33 |
| Mar | 4.80 | 5.32 | -0.52 |
| Apr | 4.29 | 4.69 | -0.40 |
| May | 3.50 | 3.56 | -0.06 |
| Jun | 3.67 | 3.88 | -0.21 |
| Jul | 3.10 | 3.18 | -0.08 |
| Aug | 3.68 | 3.94 | -0.26 |
| Sep | 3.90 | 3.96 | -0.06 |
| Oct | 4.61 | 4.80 | -0.19 |
| Nov | 3.93 | 4.25 | -0.32 |
| Dec | 4.65 | 5.10 | -0.45 |
47.16 | 50.41 | -3.25 |