| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.36 | 3.91 | 0.45 |
| Feb | 3.54 | 3.28 | 0.26 |
| Mar | 4.37 | 3.97 | 0.40 |
| Apr | 4.51 | 4.10 | 0.41 |
| May | 4.46 | 4.07 | 0.39 |
| Jun | 4.42 | 4.22 | 0.20 |
| Jul | 4.62 | 4.46 | 0.16 |
| Aug | 4.73 | 4.43 | 0.30 |
| Sep | 4.46 | 4.30 | 0.16 |
| Oct | 3.72 | 3.09 | 0.63 |
| Nov | 3.90 | 3.37 | 0.53 |
| Dec | 4.43 | 3.99 | 0.44 |
51.52 | 47.19 | 4.33 |