| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.78 | 2.09 | -0.31 |
| Feb | 1.72 | 1.82 | -0.10 |
| Mar | 1.28 | 1.51 | -0.23 |
| Apr | 1.15 | 1.33 | -0.18 |
| May | 1.21 | 1.34 | -0.13 |
| Jun | 0.59 | 0.66 | -0.07 |
| Jul | 2.16 | 1.99 | 0.17 |
| Aug | 2.33 | 2.69 | -0.36 |
| Sep | 2.23 | 2.27 | -0.04 |
| Oct | 1.73 | 1.85 | -0.12 |
| Nov | 1.53 | 1.55 | -0.02 |
| Dec | 1.67 | 1.78 | -0.11 |
19.38 | 20.88 | -1.50 |