| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.74 | 0.89 | -0.15 |
| Feb | 0.78 | 0.89 | -0.11 |
| Mar | 1.57 | 1.66 | -0.09 |
| Apr | 2.88 | 3.02 | -0.14 |
| May | 4.20 | 4.26 | -0.06 |
| Jun | 4.72 | 4.73 | -0.01 |
| Jul | 4.18 | 4.22 | -0.04 |
| Aug | 4.44 | 4.59 | -0.15 |
| Sep | 3.18 | 3.27 | -0.09 |
| Oct | 2.56 | 2.63 | -0.07 |
| Nov | 1.55 | 1.63 | -0.08 |
| Dec | 1.04 | 1.23 | -0.19 |
31.84 | 33.02 | -1.18 |