| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.26 | 4.28 | -0.02 |
| Feb | 4.15 | 4.17 | -0.02 |
| Mar | 4.56 | 4.58 | -0.02 |
| Apr | 3.34 | 3.45 | -0.11 |
| May | 3.44 | 3.36 | 0.08 |
| Jun | 4.27 | 4.34 | -0.07 |
| Jul | 4.01 | 4.06 | -0.05 |
| Aug | 4.36 | 4.27 | 0.09 |
| Sep | 3.79 | 3.70 | 0.09 |
| Oct | 3.33 | 3.31 | 0.02 |
| Nov | 3.76 | 3.85 | -0.09 |
| Dec | 4.66 | 4.64 | 0.02 |
47.93 | 48.01 | -0.08 |