| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.68 | -0.11 |
| Feb | 3.15 | 3.32 | -0.17 |
| Mar | 4.22 | 4.41 | -0.19 |
| Apr | 4.33 | 4.57 | -0.24 |
| May | 3.91 | 4.03 | -0.12 |
| Jun | 4.35 | 4.35 | 0.00 |
| Jul | 3.85 | 3.93 | -0.08 |
| Aug | 4.00 | 4.21 | -0.21 |
| Sep | 4.47 | 4.46 | 0.01 |
| Oct | 4.62 | 4.83 | -0.21 |
| Nov | 3.84 | 3.83 | 0.01 |
| Dec | 4.39 | 4.52 | -0.13 |
48.70 | 50.14 | -1.44 |