| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.90 | 4.16 | -0.26 |
| Feb | 3.45 | 3.68 | -0.23 |
| Mar | 4.92 | 5.43 | -0.51 |
| Apr | 4.40 | 4.77 | -0.37 |
| May | 3.52 | 3.64 | -0.12 |
| Jun | 3.76 | 3.97 | -0.21 |
| Jul | 3.21 | 3.24 | -0.03 |
| Aug | 3.79 | 4.03 | -0.24 |
| Sep | 3.97 | 4.05 | -0.08 |
| Oct | 4.66 | 4.85 | -0.19 |
| Nov | 4.10 | 4.33 | -0.23 |
| Dec | 4.80 | 5.20 | -0.40 |
48.48 | 51.35 | -2.87 |