| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.44 | 3.55 | -0.11 |
| Feb | 3.25 | 3.30 | -0.05 |
| Mar | 4.25 | 4.29 | -0.04 |
| Apr | 4.15 | 4.15 | 0.00 |
| May | 3.65 | 3.56 | 0.09 |
| Jun | 4.26 | 4.17 | 0.09 |
| Jul | 3.71 | 3.70 | 0.01 |
| Aug | 3.90 | 3.92 | -0.02 |
| Sep | 3.96 | 3.85 | 0.11 |
| Oct | 4.79 | 4.80 | -0.01 |
| Nov | 3.82 | 3.74 | 0.08 |
| Dec | 4.41 | 4.58 | -0.17 |
47.59 | 47.61 | -0.02 |