| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.63 | 3.78 | -0.15 |
| Feb | 3.92 | 4.01 | -0.09 |
| Mar | 4.81 | 4.85 | -0.04 |
| Apr | 5.17 | 5.18 | -0.01 |
| May | 5.41 | 5.11 | 0.30 |
| Jun | 3.48 | 3.49 | -0.01 |
| Jul | 4.04 | 3.92 | 0.12 |
| Aug | 3.66 | 3.53 | 0.13 |
| Sep | 3.33 | 3.32 | 0.01 |
| Oct | 3.82 | 4.19 | -0.37 |
| Nov | 4.47 | 4.65 | -0.18 |
| Dec | 4.40 | 4.61 | -0.21 |
50.14 | 50.64 | -0.50 |