| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.65 | 0.67 | -0.02 |
| Feb | 0.65 | 0.69 | -0.04 |
| Mar | 1.21 | 1.26 | -0.05 |
| Apr | 2.13 | 2.24 | -0.11 |
| May | 3.34 | 3.42 | -0.08 |
| Jun | 4.24 | 4.27 | -0.03 |
| Jul | 4.31 | 4.31 | 0.00 |
| Aug | 3.37 | 3.19 | 0.18 |
| Sep | 2.90 | 2.86 | 0.04 |
| Oct | 2.66 | 2.72 | -0.06 |
| Nov | 1.21 | 1.20 | 0.01 |
| Dec | 0.88 | 0.92 | -0.04 |
27.55 | 27.75 | -0.20 |