| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.85 | 0.83 | 0.02 |
| Feb | 0.92 | 0.90 | 0.02 |
| Mar | 1.77 | 1.68 | 0.09 |
| Apr | 3.22 | 3.13 | 0.09 |
| May | 4.31 | 4.31 | 0.00 |
| Jun | 5.23 | 5.24 | -0.01 |
| Jul | 4.28 | 4.38 | -0.10 |
| Aug | 4.09 | 4.22 | -0.13 |
| Sep | 3.34 | 3.38 | -0.04 |
| Oct | 2.53 | 2.60 | -0.07 |
| Nov | 1.54 | 1.49 | 0.05 |
| Dec | 1.21 | 1.10 | 0.11 |
33.29 | 33.26 | 0.03 |