| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.33 | 0.34 | -0.01 |
| Feb | 0.49 | 0.54 | -0.05 |
| Mar | 0.99 | 1.01 | -0.02 |
| Apr | 2.12 | 2.21 | -0.09 |
| May | 3.23 | 3.19 | 0.04 |
| Jun | 3.30 | 3.24 | 0.06 |
| Jul | 3.23 | 3.24 | -0.01 |
| Aug | 2.77 | 2.92 | -0.15 |
| Sep | 1.58 | 1.64 | -0.06 |
| Oct | 1.57 | 1.61 | -0.04 |
| Nov | 0.61 | 0.65 | -0.04 |
| Dec | 0.44 | 0.49 | -0.05 |
20.66 | 21.08 | -0.42 |