 used to shrugging off the heat in las vegas residents there are now eyeing the thermometer as the desert city's on track today to set a record for the most consecutive days over 115 degrees fahrenheit amid a lingering hot spell that continues to scorch much of the country into the weekend on tuesday las vegas flirted again with an all-time high temperature of 120 that was reached on sunday but it settled for a new daily mark of 119. the searing heat wave gripping large areas of the country