| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.74 | 0.95 | -0.21 |
| Feb | 0.78 | 0.91 | -0.13 |
| Mar | 1.59 | 1.70 | -0.11 |
| Apr | 2.89 | 3.06 | -0.17 |
| May | 4.19 | 4.22 | -0.03 |
| Jun | 4.63 | 4.70 | -0.07 |
| Jul | 4.18 | 4.30 | -0.12 |
| Aug | 4.48 | 4.54 | -0.06 |
| Sep | 3.28 | 3.29 | -0.01 |
| Oct | 2.66 | 2.72 | -0.06 |
| Nov | 1.57 | 1.68 | -0.11 |
| Dec | 1.04 | 1.27 | -0.23 |
32.03 | 33.34 | -1.31 |