| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.70 | 0.83 | -0.13 |
| Feb | 0.79 | 0.88 | -0.09 |
| Mar | 1.47 | 1.58 | -0.11 |
| Apr | 2.80 | 2.97 | -0.17 |
| May | 4.17 | 4.32 | -0.15 |
| Jun | 4.41 | 4.46 | -0.05 |
| Jul | 4.21 | 4.23 | -0.02 |
| Aug | 4.04 | 4.18 | -0.14 |
| Sep | 3.11 | 3.20 | -0.09 |
| Oct | 2.82 | 2.72 | 0.10 |
| Nov | 1.55 | 1.66 | -0.11 |
| Dec | 1.03 | 1.20 | -0.17 |
31.10 | 32.23 | -1.13 |