| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.69 | 0.72 | -0.03 |
| Feb | 0.80 | 0.77 | 0.03 |
| Mar | 1.40 | 1.48 | -0.08 |
| Apr | 2.50 | 2.58 | -0.08 |
| May | 3.49 | 3.75 | -0.26 |
| Jun | 4.34 | 4.52 | -0.18 |
| Jul | 3.62 | 3.58 | 0.04 |
| Aug | 3.79 | 4.09 | -0.30 |
| Sep | 3.01 | 3.06 | -0.05 |
| Oct | 2.24 | 2.46 | -0.22 |
| Nov | 1.28 | 1.27 | 0.01 |
| Dec | 0.89 | 0.95 | -0.06 |
28.05 | 29.23 | -1.18 |