National Weather Service United States Department of Commerce

 

   The New Monthly/Annual Climate Normals (1991-2020) for East Central Florida   

 

What are Climate Normals and why are they released every 10 years:

  • A "normal" is the 30-year average of a particular climatological variable’s (such as temperature and precipitation) measurements, calculated for a uniform time period. Climate normals are derived from weather and climate observations captured by weather stations, and are used to put today’s weather into a historical context.
     
  • The World Meteorological Organization (WMO), of which the United States is a member, requires each member nation to compute 30-year meteorological averages at least every 30 years, but recommends an update each decade. So, the old 1981-2010 set of normals are now replaced with averages over the 1991-2020 period.

 

Additional Resources:

 

Below is a table for the primary climate stations across east central Florida, showing the new 1991-2020 normal temperature and precipitation statistics for the month and year and comparing them to the outgoing 1981-2010 normal values. Use the legend below to see how these values have changed. For example, an increase in the monthly average temperature from the previous 1981-2010 Normal value is highlighted in the “Change” row in red.