| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.53 | 0.04 |
| Feb | 3.01 | 2.98 | 0.03 |
| Mar | 4.06 | 4.00 | 0.06 |
| Apr | 3.65 | 3.65 | 0.00 |
| May | 3.81 | 3.64 | 0.17 |
| Jun | 4.40 | 4.43 | -0.03 |
| Jul | 4.83 | 4.84 | -0.01 |
| Aug | 4.68 | 4.70 | -0.02 |
| Sep | 4.89 | 5.31 | -0.42 |
| Oct | 3.51 | 3.64 | -0.13 |
| Nov | 3.38 | 3.35 | 0.03 |
| Dec | 3.52 | 3.48 | 0.04 |
47.31 | 47.55 | -0.24 |