| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.65 | 0.68 | -0.03 |
| Feb | 0.65 | 0.70 | -0.05 |
| Mar | 1.22 | 1.28 | -0.06 |
| Apr | 2.14 | 2.26 | -0.12 |
| May | 3.36 | 3.41 | -0.05 |
| Jun | 4.24 | 4.29 | -0.05 |
| Jul | 4.34 | 4.36 | -0.02 |
| Aug | 3.39 | 3.20 | 0.19 |
| Sep | 2.90 | 2.85 | 0.05 |
| Oct | 2.67 | 2.74 | -0.07 |
| Nov | 1.22 | 1.23 | -0.01 |
| Dec | 0.88 | 0.92 | -0.04 |
27.66 | 27.92 | -0.26 |