| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.54 | 3.91 | -0.37 |
| Feb | 3.06 | 3.53 | -0.47 |
| Mar | 4.15 | 4.64 | -0.49 |
| Apr | 4.20 | 4.76 | -0.56 |
| May | 3.50 | 3.90 | -0.40 |
| Jun | 4.26 | 4.31 | -0.05 |
| Jul | 3.78 | 3.75 | 0.03 |
| Aug | 3.72 | 4.13 | -0.41 |
| Sep | 4.12 | 4.54 | -0.42 |
| Oct | 4.35 | 4.75 | -0.40 |
| Nov | 3.80 | 3.98 | -0.18 |
| Dec | 4.20 | 4.82 | -0.62 |
46.68 | 51.02 | -4.34 |