| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.28 | 3.98 | 0.30 |
| Feb | 3.50 | 3.30 | 0.20 |
| Mar | 4.35 | 4.08 | 0.27 |
| Apr | 4.52 | 4.35 | 0.17 |
| May | 4.67 | 4.47 | 0.20 |
| Jun | 4.46 | 4.62 | -0.16 |
| Jul | 4.85 | 4.67 | 0.18 |
| Aug | 4.79 | 4.62 | 0.17 |
| Sep | 4.57 | 4.77 | -0.20 |
| Oct | 3.59 | 3.35 | 0.24 |
| Nov | 3.86 | 3.32 | 0.54 |
| Dec | 4.38 | 4.06 | 0.32 |
51.82 | 49.59 | 2.23 |