| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.42 | -0.03 |
| Feb | 0.38 | 0.35 | 0.03 |
| Mar | 1.05 | 1.14 | -0.09 |
| Apr | 1.54 | 1.39 | 0.15 |
| May | 2.14 | 1.95 | 0.19 |
| Jun | 2.82 | 2.60 | 0.22 |
| Jul | 2.91 | 2.73 | 0.18 |
| Aug | 2.90 | 2.93 | -0.03 |
| Sep | 1.26 | 1.39 | -0.13 |
| Oct | 1.59 | 1.64 | -0.05 |
| Nov | 0.51 | 0.51 | 0.00 |
| Dec | 0.60 | 0.70 | -0.10 |
18.09 | 17.75 | 0.34 |