| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.77 | 0.85 | -0.08 |
| Feb | 0.71 | 0.72 | -0.01 |
| Mar | 1.13 | 1.13 | 0.00 |
| Apr | 1.85 | 1.97 | -0.12 |
| May | 3.00 | 3.06 | -0.06 |
| Jun | 4.45 | 4.35 | 0.10 |
| Jul | 3.93 | 4.09 | -0.16 |
| Aug | 3.32 | 3.31 | 0.01 |
| Sep | 2.98 | 3.21 | -0.23 |
| Oct | 2.62 | 2.67 | -0.05 |
| Nov | 1.34 | 1.42 | -0.08 |
| Dec | 0.99 | 1.10 | -0.11 |
27.09 | 27.88 | -0.79 |