| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.92 | 0.91 | 0.01 |
| Feb | 0.95 | 0.96 | -0.01 |
| Mar | 1.82 | 1.77 | 0.05 |
| Apr | 3.11 | 2.95 | 0.16 |
| May | 4.34 | 4.35 | -0.01 |
| Jun | 5.13 | 5.19 | -0.06 |
| Jul | 4.26 | 4.14 | 0.12 |
| Aug | 4.64 | 4.62 | 0.02 |
| Sep | 3.59 | 3.52 | 0.07 |
| Oct | 2.61 | 2.52 | 0.09 |
| Nov | 1.66 | 1.64 | 0.02 |
| Dec | 1.19 | 1.25 | -0.06 |
34.22 | 33.82 | 0.40 |