| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.27 | 0.26 | 0.01 |
| Feb | 0.47 | 0.48 | -0.01 |
| Mar | 0.89 | 0.92 | -0.03 |
| Apr | 1.78 | 1.84 | -0.06 |
| May | 2.80 | 2.96 | -0.16 |
| Jun | 2.69 | 2.93 | -0.24 |
| Jul | 2.55 | 2.50 | 0.05 |
| Aug | 1.99 | 2.10 | -0.11 |
| Sep | 1.48 | 1.51 | -0.03 |
| Oct | 1.21 | 1.23 | -0.02 |
| Nov | 0.51 | 0.53 | -0.02 |
| Dec | 0.40 | 0.42 | -0.02 |
17.04 | 17.68 | -0.64 |