| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.67 | 0.64 | 0.03 |
| Feb | 0.67 | 0.68 | -0.01 |
| Mar | 1.26 | 1.25 | 0.01 |
| Apr | 2.22 | 2.25 | -0.03 |
| May | 3.36 | 3.42 | -0.06 |
| Jun | 4.22 | 4.21 | 0.01 |
| Jul | 4.34 | 4.30 | 0.04 |
| Aug | 3.44 | 3.27 | 0.17 |
| Sep | 2.96 | 2.84 | 0.12 |
| Oct | 2.65 | 2.68 | -0.03 |
| Nov | 1.21 | 1.16 | 0.05 |
| Dec | 0.88 | 0.90 | -0.02 |
27.88 | 27.60 | 0.28 |