| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.58 | 0.63 | -0.05 |
| Feb | 0.82 | 0.81 | 0.01 |
| Mar | 1.46 | 1.48 | -0.02 |
| Apr | 2.92 | 2.98 | -0.06 |
| May | 3.80 | 3.77 | 0.03 |
| Jun | 4.58 | 4.46 | 0.12 |
| Jul | 3.39 | 3.42 | -0.03 |
| Aug | 3.35 | 3.36 | -0.01 |
| Sep | 2.96 | 2.85 | 0.11 |
| Oct | 2.30 | 2.30 | 0.00 |
| Nov | 1.20 | 1.27 | -0.07 |
| Dec | 0.84 | 0.88 | -0.04 |
28.20 | 28.21 | -0.01 |