| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.69 | 3.29 | 0.40 |
| Feb | 3.03 | 2.71 | 0.32 |
| Mar | 3.94 | 3.64 | 0.30 |
| Apr | 4.28 | 3.86 | 0.42 |
| May | 4.58 | 4.20 | 0.38 |
| Jun | 4.47 | 4.20 | 0.27 |
| Jul | 4.45 | 4.05 | 0.40 |
| Aug | 4.55 | 3.93 | 0.62 |
| Sep | 4.33 | 3.78 | 0.55 |
| Oct | 3.40 | 3.34 | 0.06 |
| Nov | 3.36 | 3.03 | 0.33 |
| Dec | 3.56 | 3.29 | 0.27 |
47.64 | 43.32 | 4.32 |