This file provides the latest status of NOAA's 1981-2010 Supplemental Normals

Created: October 26, 2012

Last Modified: August 17, 2015


*** August 17, 2015:

This update to NOAA's 1981-2010 Climate Normals features new
supplemental products, including 10-year hourly normals and air freezing
index return periods. In the future, various new monthly temperature
normals products (5-, 10-, 15-, 20-year averages; OCN; and Hinge Fit)
will be released.



*** January 2, 2013:

NOAA's 1981-2010 Supplemental Normals were released on January 2, 2013.
This includes growing degree days, probabilities of first and last frost
and freeze events, probabilities of occurrence of minimum temperature
thresholds, and growing season length probabilities.