| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.95 | 1.84 | 0.11 |
| Feb | 1.51 | 1.25 | 0.26 |
| Mar | 1.69 | 1.60 | 0.09 |
| Apr | 1.61 | 1.47 | 0.14 |
| May | 2.19 | 2.24 | -0.05 |
| Jun | 2.26 | 2.33 | -0.07 |
| Jul | 1.13 | 1.06 | 0.07 |
| Aug | 0.75 | 0.65 | 0.10 |
| Sep | 0.98 | 0.84 | 0.14 |
| Oct | 1.51 | 1.30 | 0.21 |
| Nov | 2.08 | 1.88 | 0.20 |
| Dec | 2.37 | 2.17 | 0.20 |
20.03 | 18.63 | 1.40 |