| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.42 | 0.43 | -0.01 |
| Feb | 0.60 | 0.61 | -0.01 |
| Mar | 0.84 | 0.87 | -0.03 |
| Apr | 1.96 | 2.05 | -0.09 |
| May | 3.16 | 3.28 | -0.12 |
| Jun | 3.54 | 3.67 | -0.13 |
| Jul | 2.65 | 2.78 | -0.13 |
| Aug | 2.22 | 2.25 | -0.03 |
| Sep | 1.86 | 1.84 | 0.02 |
| Oct | 1.70 | 1.73 | -0.03 |
| Nov | 0.54 | 0.58 | -0.04 |
| Dec | 0.45 | 0.49 | -0.04 |
19.94 | 20.58 | -0.64 |