| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.97 | 1.19 | -0.22 |
| Feb | 1.07 | 1.30 | -0.23 |
| Mar | 1.42 | 1.76 | -0.34 |
| Apr | 1.34 | 1.45 | -0.11 |
| May | 1.55 | 1.45 | 0.10 |
| Jun | 1.16 | 1.25 | -0.09 |
| Jul | 2.84 | 2.85 | -0.01 |
| Aug | 2.65 | 2.86 | -0.21 |
| Sep | 1.77 | 1.91 | -0.14 |
| Oct | 1.43 | 1.54 | -0.11 |
| Nov | 1.10 | 1.05 | 0.05 |
| Dec | 1.03 | 1.24 | -0.21 |
18.33 | 19.85 | -1.52 |