| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.67 | 0.65 | 0.02 |
| Feb | 0.67 | 0.69 | -0.02 |
| Mar | 1.27 | 1.26 | 0.01 |
| Apr | 2.23 | 2.27 | -0.04 |
| May | 3.35 | 3.43 | -0.08 |
| Jun | 4.22 | 4.25 | -0.03 |
| Jul | 4.31 | 4.28 | 0.03 |
| Aug | 3.46 | 3.31 | 0.15 |
| Sep | 2.95 | 2.85 | 0.10 |
| Oct | 2.64 | 2.69 | -0.05 |
| Nov | 1.21 | 1.17 | 0.04 |
| Dec | 0.88 | 0.90 | -0.02 |
27.86 | 27.75 | 0.11 |