| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.04 | 4.04 | 0.00 |
| Feb | 3.55 | 3.49 | 0.06 |
| Mar | 4.92 | 5.03 | -0.11 |
| Apr | 4.47 | 4.58 | -0.11 |
| May | 3.54 | 3.47 | 0.07 |
| Jun | 4.00 | 4.02 | -0.02 |
| Jul | 3.33 | 3.34 | -0.01 |
| Aug | 3.89 | 3.88 | 0.01 |
| Sep | 4.10 | 4.08 | 0.02 |
| Oct | 4.82 | 4.72 | 0.10 |
| Nov | 4.26 | 4.18 | 0.08 |
| Dec | 4.91 | 4.94 | -0.03 |
49.83 | 49.77 | 0.06 |