| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.63 | 0.62 | 0.01 |
| Feb | 0.83 | 0.85 | -0.02 |
| Mar | 1.43 | 1.50 | -0.07 |
| Apr | 2.52 | 2.57 | -0.05 |
| May | 4.29 | 4.31 | -0.02 |
| Jun | 3.91 | 4.28 | -0.37 |
| Jul | 4.35 | 4.26 | 0.09 |
| Aug | 3.45 | 3.34 | 0.11 |
| Sep | 2.55 | 2.55 | 0.00 |
| Oct | 1.99 | 2.01 | -0.02 |
| Nov | 1.19 | 1.20 | -0.01 |
| Dec | 0.94 | 0.96 | -0.02 |
28.08 | 28.45 | -0.37 |