| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.62 | 1.40 | 0.22 |
| Feb | 1.45 | 1.25 | 0.20 |
| Mar | 1.45 | 1.28 | 0.17 |
| Apr | 1.98 | 1.78 | 0.20 |
| May | 1.76 | 1.65 | 0.11 |
| Jun | 1.07 | 1.12 | -0.05 |
| Jul | 1.43 | 1.59 | -0.16 |
| Aug | 1.36 | 1.57 | -0.21 |
| Sep | 1.57 | 1.51 | 0.06 |
| Oct | 1.47 | 1.27 | 0.20 |
| Nov | 1.44 | 1.23 | 0.21 |
| Dec | 1.46 | 1.30 | 0.16 |
18.06 | 16.95 | 1.11 |