NOAA climate normals 1981-2010

National Centers for Environmental Information, formerly National Climatic Data Center (NCDC), at the National Oceanic and Atmospheric Administration https://www.ncdc.noaa.gov/

Download from: https://www1.ncdc.noaa.gov/pub/data/normals/1981-2010/

Download data (HDD and CDD now)

mkdir data
cd data

# download data readme
wget https://www1.ncdc.noaa.gov/pub/data/normals/1981-2010/readme.txt

# download temperature station meta data
wget -O temp-station-info.txt https://www1.ncdc.noaa.gov/pub/data/normals/1981-2010/station-inventories/temp-inventory.txt

# download annual heating degree day 
wget -O ann-htdd-base65.txt https://www1.ncdc.noaa.gov/pub/data/normals/1981-2010/products/temperature/ann-htdd-normal.txt

# download annual cooling degree day 
wget -O ann-cldd-base65.txt https://www1.ncdc.noaa.gov/pub/data/normals/1981-2010/products/temperature/ann-cldd-normal.txt