| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.78 | 1.61 | 0.17 |
| Feb | 1.37 | 1.34 | 0.03 |
| Mar | 1.20 | 1.01 | 0.19 |
| Apr | 1.34 | 1.14 | 0.20 |
| May | 2.18 | 1.96 | 0.22 |
| Jun | 2.48 | 2.46 | 0.02 |
| Jul | 0.95 | 0.89 | 0.06 |
| Aug | 0.96 | 0.98 | -0.02 |
| Sep | 1.28 | 1.21 | 0.07 |
| Oct | 1.60 | 1.46 | 0.14 |
| Nov | 1.72 | 1.59 | 0.13 |
| Dec | 1.87 | 1.76 | 0.11 |
18.73 | 17.41 | 1.32 |