| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.74 | -0.06 |
| Feb | 0.81 | 0.85 | -0.04 |
| Mar | 1.44 | 1.45 | -0.01 |
| Apr | 2.77 | 2.82 | -0.05 |
| May | 4.00 | 4.08 | -0.08 |
| Jun | 4.48 | 4.42 | 0.06 |
| Jul | 3.91 | 3.91 | 0.00 |
| Aug | 4.03 | 4.25 | -0.22 |
| Sep | 3.26 | 3.27 | -0.01 |
| Oct | 2.59 | 2.58 | 0.01 |
| Nov | 1.41 | 1.46 | -0.05 |
| Dec | 1.00 | 1.09 | -0.09 |
30.38 | 30.92 | -0.54 |