| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.95 | 4.17 | -0.22 |
| Feb | 3.44 | 3.63 | -0.19 |
| Mar | 4.43 | 4.58 | -0.15 |
| Apr | 4.24 | 4.19 | 0.05 |
| May | 3.56 | 3.86 | -0.30 |
| Jun | 4.19 | 4.32 | -0.13 |
| Jul | 4.13 | 4.18 | -0.05 |
| Aug | 4.32 | 4.52 | -0.20 |
| Sep | 3.89 | 4.00 | -0.11 |
| Oct | 3.37 | 3.57 | -0.20 |
| Nov | 3.66 | 3.75 | -0.09 |
| Dec | 4.23 | 4.45 | -0.22 |
47.41 | 49.22 | -1.81 |