| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.97 | 4.11 | -0.14 |
| Feb | 3.55 | 3.56 | -0.01 |
| Mar | 4.80 | 4.90 | -0.10 |
| Apr | 4.38 | 4.66 | -0.28 |
| May | 3.47 | 3.46 | 0.01 |
| Jun | 4.05 | 4.18 | -0.13 |
| Jul | 3.40 | 3.41 | -0.01 |
| Aug | 3.82 | 3.83 | -0.01 |
| Sep | 4.05 | 4.08 | -0.03 |
| Oct | 4.74 | 4.79 | -0.05 |
| Nov | 4.18 | 4.20 | -0.02 |
| Dec | 4.78 | 4.97 | -0.19 |
49.19 | 50.15 | -0.96 |