| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.62 | 0.65 | -0.03 |
| Feb | 0.71 | 0.75 | -0.04 |
| Mar | 1.49 | 1.51 | -0.02 |
| Apr | 2.72 | 2.80 | -0.08 |
| May | 3.73 | 3.80 | -0.07 |
| Jun | 4.56 | 4.47 | 0.09 |
| Jul | 3.69 | 3.58 | 0.11 |
| Aug | 3.80 | 3.62 | 0.18 |
| Sep | 3.17 | 3.11 | 0.06 |
| Oct | 2.25 | 2.20 | 0.05 |
| Nov | 1.32 | 1.30 | 0.02 |
| Dec | 0.83 | 0.89 | -0.06 |
28.89 | 28.68 | 0.21 |