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National Climate Summary

Percentage Area Wet/Dry Hot/Cold

October 2009


National Climatic Data Center
Asheville, North Carolina
Updated November 9 2009
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US Percent Area very wet/dry and very warm/cold.

The percent area of the contiguous United States very warm and cold and very wet and dry is listed in the table below. These percentages are computed based on the climate division data set. Those climate divisions having the monthly average temperature in the top ten percent (> 90th percentile) of their historical distribution are very warm and those in the bottom ten percent (< 10th percentile) are very cold. Likewise, those divisions having the monthly total precipitation in the top ten percent are very wet and those in the bottom ten percent are very dry.

October 2009
Percent Area of the Contiguous U.S.
Category Very Warm Very Cold Very Wet Very Dry
% Area 1.2% 53.7% 40.1% 3.5%

Percent Very Warm and Very Cold
Percent Very Wet and Very Dry



For all climate questions other than questions concerning this report, please contact the National Climatic Data Center's Climate Services and Monitoring Division:

Climate Services and Monitoring Division
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: +1-828-271-4876
phone: +1-828-271-4800
email: ncdc.info@noaa.gov
To request climate data, please E-mail: ncdc.orders@noaa.gov