| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.54 | 3.56 | -0.02 |
| Feb | 2.82 | 2.84 | -0.02 |
| Mar | 4.09 | 4.18 | -0.09 |
| Apr | 3.83 | 3.88 | -0.05 |
| May | 4.12 | 4.06 | 0.06 |
| Jun | 4.50 | 4.45 | 0.05 |
| Jul | 4.92 | 4.87 | 0.05 |
| Aug | 4.57 | 4.38 | 0.19 |
| Sep | 4.46 | 4.28 | 0.18 |
| Oct | 4.31 | 4.24 | 0.07 |
| Nov | 3.32 | 3.35 | -0.03 |
| Dec | 4.27 | 4.36 | -0.09 |
48.75 | 48.45 | 0.30 |