High Dew Points Bring Sticky Conditions - 47 ABC - Delmarva's Choice

High Dew Points Bring Sticky Conditions

It's that time of year again when the heat begins to increase and the dreaded humidity takes over. So far, this spring season has been pleasant and comfortable, but that's not going to be the case this week.

When you want to determine whether the environment is humid or not it's best to look at the dew point, not the humidity. I know that sounds weird but the humidity is actually called relative humidity. The humidity number that's calculated in the form of a percent is actually relative, relative to its surrounding environment. Warmer environments can hold more moisture than colder environments, so a 90% humidity value in the winter can actually be LESS humid than a 50% humidity value in the summer. So just because the humidity is higher doesn't mean it's more humid, it just means that particular environment is closer to reaching full saturation. Humidity doesn't tell you the overall amount of moisture in the air, but the dew point does.

A dew point temperature is the temperature the environment would have to reach before it attains 100% saturation or 100% humidity. When dew points reach 60 degrees it begins to feel sticky. When it gets to 65 it's humid and uncomfortable, and when it reaches 70 or higher it is oppressive. Dew points are higher in the summer and lower in the winter, which is why you never hear someone describing a winter day as humid.

THIS WEEK: Dew points look to reach the upper 60s and lower 70s all week long, meaning it will be humid, uncomfortable, and very sticky. The attached image is a forecast model predicting what the dew points will be this afternoon. It's forecasting a dew point of 74 degrees in Salisbury; that is extremely humid. Stay cool out there!

  • Weather Email Signup

    Get your weather daily from the WMDT 47 Weather Team

    * denotes required fields

    Thank you for signing up! You will receive a confirmation email shortly.
  • Most Popular StoriesMost Popular StoriesMore>>

  • Homeless Sex Offenders

    Homeless Sex Offenders

    DELAWARE - Individuals featured in this slideshow are NOT wanted. They are sex offenders who have registered with Delaware State Police as homeless. These are public notifications.More >>
    DELAWARE - Individuals featured in this slideshow are NOT wanted. They are sex offenders who have registered with Delaware State Police as homeless. These are public notifications.More >>
  • Five Injured Following Ocean Pines Boat Fire

    Five Injured Following Ocean Pines Boat Fire

    Sunday, August 31 2014 10:49 PM EDT2014-09-01 02:49:55 GMT
    OCEAN PINES, Md. - Maryland Natural Resources spokesperson says five people have been hospitalized after a 24-foot boat caught ablaze in Ocean Pines.More >>
    OCEAN PINES, Md. - Maryland Natural Resources spokesperson says five people have been hospitalized after a 24-foot boat caught ablaze in Ocean Pines.More >>
  • Head-On Car Crash Kills 3 In Accomack

    Head-On Car Crash Kills 3 In Accomack

    Saturday, August 30 2014 11:39 PM EDT2014-08-31 03:39:26 GMT
    ACCOMACK COUNTY, Va. - A head-on collision has taken the lives of three after a drunk driver struck a car holding six people. The drunk driver, who was driving a van, has been arrested for DUI. The crashMore >>
    ACCOMACK COUNTY, Va. - A head-on collision has taken the lives of three after a drunk driver struck a car holding six people. The drunk driver, who was driving a van, has been arrested for DUI. The crashMore >>
Gardening Grannies
Powered by WorldNow
Powered by WorldNow All content © Copyright 2000 - 2014 WorldNow and WMDT. All Rights Reserved. For more information on this site, please read our Privacy Policy and Terms of Service.