QT Info Systems Weather
QT Info Systems Weather . In some systems other statistics are included in the calculations. Noaa great lakes environmental research laboratory great lakes surface temperatures; QT Info Systems Weather from www.qtweather.com This map is updated every hour using data from noaa's national weather service. Data for 2020 should be considered preliminary. A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants.