In the last 30 years, the average temperatures in the United States have risen by 0.5 degrees Fahrenheit. The 30-year normal temperatures are to be released tomorrow by the NOAA’s National Climatic Data Center (NCDC). The standards they are measured against were established by the World Meteorological Association, plus the NOAA has improved the methodology used to calculate normals.
Broken down, this means that a third-party, reputable scientific organization has confirmed that normal US temperatures are going up. This has implications for the agricultural industry, which relies on this data to calculate planting times and crop selection.