Solar radiation for selected U.S. Locations

Monthly radiation averaged over a 30-year period, 1961-1990 for various U.S. locations is represented in this Table. Months shaded in blue have optimal solar radiation for cool-season turf, while months shaded in red have optimal solar radiation for warm-season turf. Months shaded in yellow have higher than optimal radiation for cool-season turf, but less than optimal radiation for warm-season turf. Data source: The National Solar Radiation Data Base (NSRDB), which contains solar radiation and supplementary meteorological data from 237 sites…