Table 1 NOAA 30-year annual precipitation normals for two locations in Southeast Texas
| Time period | City of Houston normal rainfall (in.) | Barker (NW Houston) normal rainfall (in.) |
|---|---|---|
| 1951–1980 | 44.77 | 40.52 |
| 1961–1990 | 46.07 | 42.39 |
| 1971–2000 | 47.84 | 46.96 |
| 1981–2010 | 49.77 | 48.66 |