| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.70 | 0.82 | -0.12 |
| Feb | 0.80 | 0.90 | -0.10 |
| Mar | 1.46 | 1.57 | -0.11 |
| Apr | 2.77 | 2.96 | -0.19 |
| May | 4.17 | 4.30 | -0.13 |
| Jun | 4.44 | 4.46 | -0.02 |
| Jul | 4.24 | 4.38 | -0.14 |
| Aug | 3.99 | 4.18 | -0.19 |
| Sep | 3.13 | 3.26 | -0.13 |
| Oct | 2.85 | 2.78 | 0.07 |
| Nov | 1.55 | 1.68 | -0.13 |
| Dec | 1.04 | 1.18 | -0.14 |
31.14 | 32.47 | -1.33 |