| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.70 | 2.71 | -0.01 |
| Feb | 2.20 | 2.27 | -0.07 |
| Mar | 2.96 | 2.89 | 0.07 |
| Apr | 3.87 | 3.90 | -0.03 |
| May | 4.35 | 4.33 | 0.02 |
| Jun | 4.47 | 4.51 | -0.04 |
| Jul | 4.13 | 4.30 | -0.17 |
| Aug | 3.77 | 3.75 | 0.02 |
| Sep | 3.03 | 3.12 | -0.09 |
| Oct | 2.90 | 2.83 | 0.07 |
| Nov | 3.09 | 3.07 | 0.02 |
| Dec | 2.58 | 2.55 | 0.03 |
40.05 | 40.23 | -0.18 |