A low temperature of 49 degrees Monday morning, measured at Denver International Airport, tied the record for the coldest on this day of the year, according to the National Weather Service. That record was set in 1976, National Weather Service officials announced in a posting on X, the social media site formerly called Twitter. Related Articles Weather | Denver weather: Cool day under sunny blue skies with light breezes, no rain Weather | Denver weather: Cloudy with a chance for showers and thunderstorms Weather | Denver weather: Partly sunny and warm with possible afternoon rain through weekend Weather | Yuma tornado wind speed hit 150 miles per hour along six-mile path of destruction Weather | Denver weather: Mostly sunny with light breeze and possible late afternoon thunderstorms This is the first day since June that Denver’s temperature has dropped below 50 degrees, weather service meteorologists said. NWS forecasters expected summer heat will return later in the week. This morning's low temperature fell to a crisp, cool, 49 degrees at Denver International Airport – tying the record low last set in 1976.