https://www.cpc.ncep.noaa.gov/
US - Temperature
https://www.cpc.ncep.noaa.gov/produc...off01_temp.gif
US - Precipitation
https://www.cpc.ncep.noaa.gov/produc...off01_prcp.gif
Long Range Temperature/Precipitation Probabilities
https://www.cpc.ncep.noaa.gov/produc.../two_class.php
More info available at link
https://www.cpc.ncep.noaa.gov/