[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-565235-105":3,"detail-sidebar-cat-1-en-105":81,"doc-detail-565235-en":127},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","wind-chill-temperatures-explanation","Wind-Chill Temperatures - Explanation","","Wind-chill temperatures describe relative discomfort caused by the combined effects of cold air and wind, and they are used to estimate how quickly exposed skin loses heat. For cyclists, moving speed can matter similarly to wind, so conditions may feel much colder than the thermometer reading. The document presents wind-chill calculation formulas for Fahrenheit and Celsius, explains risk implications such as frostbite and hypothermia, and discusses concerns about accuracy of common charts.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/template/","Template",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/template/general/","General",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/template/wind-chill-temperatures-explanation/565235/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/wind-chill-temperatures-explanation/565235.png","ImageObject",442,249,{"name":42,"@type":43},"Genevieve","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-10-12",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",10,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What does wind-chill temperature measure?","Question",{"text":63,"@type":64},"It measures relative discomfort and the increased cold stress from the combined effects of cold and wind, based on heat-loss rates for different conditions.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How is wind-chill calculated in Fahrenheit?",{"text":68,"@type":64},"The document provides the U.S. National Weather Service formula T(wc) = 0.0817(3.71V^0.5 + 5.81-0.25V)(T-91.4) + 91.4, where V is wind speed in mph and T is temperature in °F.",{"name":70,"@type":61,"acceptedAnswer":71},"What are the concerns mentioned about wind-chill charts?",{"text":72,"@type":64},"The document notes doubts about accuracy and usefulness, explaining that wind chill reflects how fast exposed flesh loses heat—not the final skin temperature—and that reports can exaggerate how cold people feel.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},565235,1792027215,{"code":4,"msg":82,"data":83},"success",[84,89,94,99,104,109,114,119,124],{"id":85,"doc_module":22,"doc_module_name":25,"category_name":86,"show_sort_weight":87,"slug":88},11,"Presentations",90,"presentations",{"id":90,"doc_module":22,"doc_module_name":25,"category_name":91,"show_sort_weight":92,"slug":93},12,"Resumes",80,"resumes",{"id":95,"doc_module":22,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},14,"Invoices",70,"invoices",{"id":100,"doc_module":22,"doc_module_name":25,"category_name":101,"show_sort_weight":102,"slug":103},15,"Posters",60,"posters",{"id":105,"doc_module":22,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},16,"Social Media",50,"social-media",{"id":110,"doc_module":22,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},17,"Forms",40,"forms",{"id":115,"doc_module":22,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},18,"Letters",30,"letters",{"id":120,"doc_module":22,"doc_module_name":25,"category_name":121,"show_sort_weight":122,"slug":123},21,"Paper Templates",5,"papers-templates",{"id":125,"doc_module":22,"doc_module_name":25,"category_name":29,"show_sort_weight":4,"slug":126},158,"general-158",{"code":4,"msg":82,"data":128},{"doc_id":79,"user_id":129,"nickname":42,"user_avatar":130,"doc_module":22,"category_id":125,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":33,"language":136,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":12,"update_tm":140,"read_time":26},1374391974585,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Home of the Winter Cyclist  \nAnd Other Crazy People.  \nHome  \nArticles  \nFahrenheit  \n40  \n35  \n30  \n25  \n20  \n15  \n10  \n5 0  \n-5  \n-10  \n-15  \n-20  \n-25  \n-30  \n-35  \n-40  \nCentigrade 4  \n2  \n-1  \n-4  \n-7  \n-9  \n-12  \n-15  \n-18  \n-21  \n-23  \n-26  \n-29  \n-32  \n-34  \n-37  \n-40  \nWind-Chill Chart  \nExplanation  \nNote that bike speed into still air is the same as wind  speed. Cyclists are often moving at 15mph even on very cold days. A quick glance at the chart indicates that you loose heat ata rate that seems much colder than the outside temperature.  \nWhile cycling in 40 degree still air, at 15 mph, it will feel like 23 degrees, or 9 degrees below freezing. Does this mean you could get frostbite at 40? No. But you will cool down at the same rate that you would if it really were 23 degrees, you will never get colder than it really is.  \nThe wind-chill temperature is a measure of relative discomfort  \ndue to combined cold and wind. It was developed by Siple and  \nPassel (1941)and is based on physiological studies of the rate of  \nheat loss for various combinations of ambient temperature and  \n[http://users.rcn.com/icebike/Articles/windchill.htm](http://users.rcn.com/icebike/Articles/windchill.htm) Page 1 of 4  \nWind Chill Temperatures 3/6/04 11:33 AM  \nwind speed. The wind-chill temperature equals the actual air  \ntemperature when the wind speed is 4 mph or less. At higher  \nwind speeds, the wind-chill temperature is lower than the air  \ntemperature and measures the increased cold stress and  \ndiscomfort associated with wind.  \nThe formula the U.S. National Weather Service uses to  \ncompute wind chill is:  \nT(wc) = 0.0817(3.71V**0.5 + 5.81-0.25V)(T-  \n91.4) + 91.4  \nT(wc) is the wind chill, V is in the wind speed in statute miles  \nper hour and T is the temperature in degrees Fahrenheit.  \nThe formula to calculate a Celsius wind chill using V as the wind  \nspeed in kilometers per hour and T in degrees Celsius is:  \nT(wc) = 0.045(5.27V**0.5 + 10.45-0.28V) (T  \n-33) + 33  \nThe effects of wind-chill depend strongly on the amount of  \nclothing and other protection worn as well as on age, health, and  \nbody characteristics. Wind-chill temperatures near or below 0 F  \nindicate that there is a risk of frostbite or other injury to exposed  \nflesh. The risk of hypothermia from being inadequately clothed  \nalso depends on the wind-chill temperature.  \nICEBIKERS always have wind-chill to deal with.  \nEven on Calm days!  \nSecond Opinion:  \nThere are some doubts about the accuracy and usefulness of the  \nwind-chill chart. First, the table seems to suggest that standing  \nout in a 20 mph wind on a 40 degree day would yield a  \ntemperature of about 10 degrees below freezing. Clearly that's  \nnot the case. You can't get frost bitten unless the temperature is  \nat or below freezing. Wind chill only measures how fast  \nexposed flesh will lose heat, not how cold (that temperature)  \nthat flesh will chill to.  \nWind-chill reports tend to exaggerate the actual rate at which  \nyou feel cold. The reports end up being discounted by most  \npeople who have experience in cold weather because it does  \n[http://users.rcn.com/icebike/Articles/windchill.htm](http://users.rcn.com/icebike/Articles/windchill.htm) Page 2 of 4  \nWind Chill Temperatures 3/6/04 11:33 AM  \nnot tend to agree with personal experience.  \nThe US weather service is thinking about revising the wind chill  \nchart, perhaps by adopting the Canadian standard (below).  \nThat standard is still not accepted by the public, because its  \nvery difficult to judge the feeling of a watt per square meter.  \nConsequently, most weather reports simply convert the official  \nmeasurement to something easier to understand-back to the  \nold wind chill chart.  \nThere are several good resources on wind chill. USA Today  \n(of all places) had a fairly good write up on this subject.  \nMore Technical  \nThe explanation of wind-chill above are subjective measures  \nof relative discomfort. As such they are at best a gui","cbCaiiOX0GSwYZmg","https://ap.wps.com/l/cbCaiiOX0GSwYZmg","pdf",93550,"English","# Wind-Chill Chart\n## Explanation\n## Second Opinion\n## More Technical","[{\"question\":\"What does wind-chill temperature measure?\",\"answer\":\"It measures relative discomfort and the increased cold stress from the combined effects of cold and wind, based on heat-loss rates for different conditions.\"},{\"question\":\"How is wind-chill calculated in Fahrenheit?\",\"answer\":\"The document provides the U.S. National Weather Service formula T(wc) = 0.0817(3.71V^0.5 + 5.81-0.25V)(T-91.4) + 91.4, where V is wind speed in mph and T is temperature in °F.\"},{\"question\":\"What are the concerns mentioned about wind-chill charts?\",\"answer\":\"The document notes doubts about accuracy and usefulness, explaining that wind chill reflects how fast exposed flesh loses heat—not the final skin temperature—and that reports can exaggerate how cold people feel.\"}]","Wind-Chill Temperatures - Explanation | PDF",1791849580]