CNN CNN

HELP/WEATHER
Frequently Asked Questions about Weather


WEATHER FAQ:

Where does CNN.com get its weather data?
CNN.com has a partnership with WSI (Weather Services International) to provide the weather data for our website.

Back to Top

How many locations does CNN.com weather service cover?
CNN.com provides complete and accurate weather forecasts for more than 50,000 cities in the United States and around the world. Additional cities are continually being added to the system, as data becomes available.

Back to Top

What types of forecast information does CNN.com provide?
CNN.com currently includes the following information in our forecasts:
  • Current conditions
  • "Feels like"
  • Sunrise/Sunset
  • Humidity
  • Wind speed/direction
  • Barometric pressure
  • Tonight's forecast (low temperature, condition, and sunset time)
  • Tomorrow's forecast (high/low temperature and condition)
  • 10-day forecast (high/low temperature and condition)
  • Satellite maps
  • Radar maps
  • Temperature maps
  • Forecast maps

  • Back to Top

    What are the current conditions?
    The current conditions data tells you what the weather is like right now. This information can be found at the top-center of the weather forecast page. Current conditions includes the temperature, what the temperature really feels like ("feels like"), the wind speed/direction, humidity, barometric pressure, and time of last update.

    Back to Top

    How many days are included in your forecasts?
    CNN.com provides a 10-day forecast for each location in the weather system.

    Back to Top

    How accurate are the long-range forecasts?
    There have been tremendous improvements in the accuracy of longer range forecasts over the past several years. A forecast for the 7th day today is as accurate as it was for the 4th or 5th day 10 years ago. Inevitably, a forecast for the 15th day is not going to be as accurate as a forecast for today or tomorrow. The best advice would be to look for trends of the weather from days 5-10, such as it being warmer or colder, sunny or rainy.

    Back to Top

    What is barometric pressure?
    Barometric pressure is a measure of the pressure in the atmosphere.

    Back to Top

    How do I search for a city?
    You can search for weather by visiting the CNN.com homepage. Look for the "Weather" box and enter either a U.S. ZIP code or any city name in the U.S. or around the world. Once you've selected a city on the homepage, you can then click on the forecast to go to the full forecast page. You also have the option of browsing for a city. Simply use the "select locations from a list" pulldowns on the forecast page and follow the instructions to narrow down your selection.

    Back to Top

    Why are you showing me these weird cities on the homepage?
    We have selected several random cities to display by default on our homepage to demonstrate our offering. The rest is up to you. All you have to do is enter your preferred city so you can get personalized weather and local headlines for your city.

    Back to Top

    Why can't I find my city?
    CNN.com provides complete and accurate weather forecasts for more than 50,000 cities in the United States and around the world. That obviously means that we don't have weather forecasts for every single city out there. But additional cities are continually being added to the system, as data becomes available. If you feel that you've found some errors in the cities that we provide, please contact us with more details.

    Back to Top

    Can I personalize my weather?
    Yes, you have several different options for personalization. You can click on the "personalize your weather" link in the top navigation bar. That will take you to a forecast page where you can search for the city of your choosing. Once you've found your city, simply click "make default" and everywhere you go on the site, you'll see the current temperature/conditions in the top navigation. You can also store up to 5 different locations on your forecast page so whether you are a business traveler or just a weather nut, you can quickly and easily see what the weather is like anywhere around the world. You can also search for a city in the weather box on the homepage. Once you've selected a city there, it will be personalized and displayed every time you visit the homepage.

    If you'd like to change your preferred location, you can either use the "edit" link on the forecast page or the "change" link in the weather box on the homepage.

    Personalize your weather now
    .

    Back to Top

    Can I store more than one location?
    Yes, you can store up to 5 locations. Just search or browse for more cities and then click the "save location" next to the city name. You can see all of your cities in the "Saved Locations" box on the forecast page.

    Back to Top

    How do I edit my saved locations?
    If you visit the forecast page, you can edit all of your saved locations. In the "Saved Locations" box, you'll see an "edit" link. Once you click that, you will be able to delete any of your saved locations. You can also quickly and easily make any location your default location. Once you've made your changes, make sure you click the "save" link.

    Back to Top

    Can I choose between Celsius and Fahrenheit?
    CNN.com provides weather data in both Celsius and Fahrenheit. You can set your preference by choosing either the C or F links in the top right corner of the forecast page. Once you make a selection, the system will remember your preference and display all weather data appropriately. If at any point you would like to change your preference, you can always change your selection on the forecast page.

    Back to Top

    What types of maps does CNN.com provide?
    CNN.com offers many different types of maps including:
  • International satellite maps
  • U.S. national satellite map
  • U.S. regional satellite maps
  • U.S. state satellite maps
  • U.S. national radar map
  • U.S. regional radar maps
  • U.S. state radar maps
  • Regional temperature maps
  • Regional forecast maps

  • Back to Top

    Back to Help