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3 of 3 Premium Clicks used this month SUBSCRIBE Print + Online Subscriber Activation | Register x Forgot Password | Need an Account? e-edition | subscribe | newsletter | deals Classifieds Jobs Autos Real Estate FEATURED » NEWS NOW Our View: Cheers to RCC, jeers to juvenile justice ... Opinions mixed at marijuana town hall forum ... Rural Jackson County residents wary of pot 'gold rush' ... Our View: Cheers to RCC, jeers to juvenile justice ... Opinions mixed at marijuana town hall forum ... Rural Jackson County residents wary of pot 'gold rush' ... SINCE YOU ASKED Since You Asked: The coldest hour usually comes after dawn MailTribune.com Writer Posted Oct. 22, 2015 @ 12:01 am Posted Oct. 22, 2015 @ 12:01 am » Social News p bs:newslist StartDate="20121121" EndDate="p bs:datecalc Months="3"" DateSort="1" UseObjects="1" ObjectClass="81" Taxonomywords="2325,665" ExactTaxonomyMatch="1" Image="1" Count="4" --> Now that we're back to cooler weather, I find myself waking up about 4 or 5 in the morning feeling chilly and I add another blanket to my bed. Is the coldest hour really before the dawn? — Susan, Medford The coldest hour is not typically before the dawn. "It usually comes 30 minutes to one hour after," said Charles Smith of the National Weather Service in Medford. Although the sun has come up, it hasn't had enough time to warm up the Earth. As the sun shines, the Earth radiates heat, warming the air over time, Smith said. To further explain the phenomenon, assorted weather websites explain that the Earth is radiating the heat it gained during the day out into space at night, causing temperatures to gradually drop on the shaded side of the planet. The Earth is still radiating heat at dawn and the incoming dawn sunlight is not enough to counteract this loss. Eventually the net heat loss reverses as the sun continues to shine, causing temperatures to begin rising. The rule about the coldest hour coming after the dawn generally holds true on clear nights, Smith said. "Clouds can complicate everything," he said. Clouds can trap heat like a blanket, and even hold heat and radiate it back toward the ground during the night, he said. The coldest hour can come at different times based on cloud cover and the movement of weather systems. On Monday night this week, the sun rose at 7:29 a.m. and the coldest hour was measured after dawn at 7:53 a.m., when temperatures dipped to 52 degrees, according to National Weather Service records. But on Sunday, the sun rose at 7:28 a.m. and the coldest temperature, 51 degrees, came before dawn at 6:53 a.m. Saturday was even more unusual, with dawn coming at 7:27 a.m. and the coldest temperature, 59 degrees, measured at 2:53 a.m. Send questions to “Since You Asked,” Mail Tribune Newsroom, P.O. Box 1108, Medford, OR 97501; by fax to 541-776-4376; or by email to [email protected]. We’re sorry, but the volume of questions received prevents us from answering all of them. MailTribune.com Writer Posted Oct. 22, 2015 @ 12:01 am » Comment or view comments Terms of Service /* $( document ).ready(function() { // Jquery mobile is trying to style the button and leaving a blank gry button on top of a white button $("#viafouracoms .vf-comment-controls li.vf-right").html(' Submit '); });*/ » STAY INFORMED Email NewsLetter Sign Up Today Sign up for our newsletter and have the top headlines from your community delivered right to your inbox. calendar Connect with MailTribune.com Facebook Twitter RSS Back to top Reader Services Reader Services Home Subscriptions Subscriber controls Contact us Submissions Photos Events Letters to the editor Corrections Announcements Obituaries Story ideas Since you asked Alerts Email Alerts RSS Feeds Text Alerts Advertise Media Kit Home Products and services Ad rates Advertising contacts Propel Marketing Mail Tribune Daily Tidings The Nickel Shop Our Valley Blogs Mobile Site Stay Informed Email newsletter Sign Up Today Sign up for our newsletter and have the top headlines from your community delivered right to your inbox. Your privacy is important, read our privacy policy. © Copyright 2015 Local Media Group, Inc. All Rights Reserved. Privacy Policy | Terms of Service | Local Media Group Publications Original content available for non-commercial use under a Creative Commons license, except where noted. MailTribune.com | P.O. Box 1108, Medford, OR 97501