| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.90 | 4.15 | -0.25 |
| Feb | 3.47 | 3.59 | -0.12 |
| Mar | 4.77 | 5.05 | -0.28 |
| Apr | 4.34 | 4.70 | -0.36 |
| May | 3.41 | 3.42 | -0.01 |
| Jun | 3.97 | 4.11 | -0.14 |
| Jul | 3.24 | 3.23 | 0.01 |
| Aug | 3.72 | 3.76 | -0.04 |
| Sep | 4.06 | 4.09 | -0.03 |
| Oct | 4.56 | 4.69 | -0.13 |
| Nov | 4.20 | 4.22 | -0.02 |
| Dec | 4.71 | 4.96 | -0.25 |
48.35 | 49.97 | -1.62 |