| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.58 | 0.65 | -0.07 |
| Feb | 0.81 | 0.82 | -0.01 |
| Mar | 1.46 | 1.50 | -0.04 |
| Apr | 2.89 | 2.99 | -0.10 |
| May | 3.77 | 3.76 | 0.01 |
| Jun | 4.63 | 4.52 | 0.11 |
| Jul | 3.44 | 3.46 | -0.02 |
| Aug | 3.34 | 3.38 | -0.04 |
| Sep | 2.98 | 2.87 | 0.11 |
| Oct | 2.30 | 2.30 | 0.00 |
| Nov | 1.20 | 1.30 | -0.10 |
| Dec | 0.84 | 0.89 | -0.05 |
28.24 | 28.44 | -0.20 |