| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.64 | 0.69 | -0.05 |
| Feb | 0.65 | 0.70 | -0.05 |
| Mar | 1.22 | 1.30 | -0.08 |
| Apr | 2.13 | 2.27 | -0.14 |
| May | 3.39 | 3.43 | -0.04 |
| Jun | 4.27 | 4.31 | -0.04 |
| Jul | 4.36 | 4.38 | -0.02 |
| Aug | 3.40 | 3.21 | 0.19 |
| Sep | 2.90 | 2.86 | 0.04 |
| Oct | 2.69 | 2.74 | -0.05 |
| Nov | 1.24 | 1.27 | -0.03 |
| Dec | 0.89 | 0.93 | -0.04 |
27.78 | 28.09 | -0.31 |