Public Information Statement
Issued by NWS Pueblo, CO

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NOUS45 KPUB 041828

Public Information Statement
National Weather Service Pueblo, CO
1228 PM MDT Tue May 4 2021

...1991-2020 US Climate Normals...

The updated 1991-2020 US Climate Normals have been released by
NOAAs National Centers for Environmental Information (NCEI).
Every ten years, NCEI is tasked to produce an updated set of 30
year averaged climate normals across the country, for climate
variables such as temperature and precipitation, as well as
snowfall, heating/cooling degree days, frost/freeze dates and
growing degree days. Climate normals are updated every 10 years to
characterize todays climate, rather than track or define long-
term trends or changes in climate. Power companies, farmers,
builders and community planners are just some of the industries
that rely on updated climate normals to develop and sustain their
business plans. NOAA does and will continue to track long-term
climate comparisons by using the 20th century average (1901-2000)
as the baseline for more recent comparisons. Preliminary analysis
of the new normals do show changes across the United States,
though they are not uniform. Because of long-term climate change,
annual average temperature is increasing over time in most places,
but changes vary from season-to-season and month-to-month. The
new normals are generally warmer across the West, South, and along
the East Coast. The new normals are cooler across the Northern
Plains and Upper Midwest, particularly during the spring season.
Precipitation changes vary considerably depending on the month,
season, and location across the U.S., with the strongest change
being wetter conditions in the Southeast during spring. For more
information on the updated 1991-2020 climate normals please

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