| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.74 | -0.06 |
| Feb | 0.81 | 0.82 | -0.01 |
| Mar | 1.44 | 1.48 | -0.04 |
| Apr | 2.74 | 2.77 | -0.03 |
| May | 3.97 | 4.06 | -0.09 |
| Jun | 4.46 | 4.37 | 0.09 |
| Jul | 3.92 | 3.94 | -0.02 |
| Aug | 4.00 | 4.20 | -0.20 |
| Sep | 3.24 | 3.22 | 0.02 |
| Oct | 2.59 | 2.62 | -0.03 |
| Nov | 1.40 | 1.43 | -0.03 |
| Dec | 0.98 | 1.08 | -0.10 |
30.23 | 30.73 | -0.50 |