| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.74 | 0.96 | -0.22 |
| Feb | 0.78 | 0.90 | -0.12 |
| Mar | 1.59 | 1.70 | -0.11 |
| Apr | 2.90 | 3.06 | -0.16 |
| May | 4.16 | 4.20 | -0.04 |
| Jun | 4.59 | 4.62 | -0.03 |
| Jul | 4.18 | 4.31 | -0.13 |
| Aug | 4.47 | 4.41 | 0.06 |
| Sep | 3.31 | 3.30 | 0.01 |
| Oct | 2.68 | 2.74 | -0.06 |
| Nov | 1.57 | 1.69 | -0.12 |
| Dec | 1.04 | 1.28 | -0.24 |
32.01 | 33.17 | -1.16 |