The New 1981-2010 Normals For East Central Florida

 

The new 1981-2010 U.S. Normals were released by the National Climatic Data Center at the beginning of July. For stations in east central Florida with longer records, this includes daily, monthly, seasonal, and annual station-based Normals of temperature and precipitation. Climate products originating from the National Weather Service in Melbourne are now using these new Normals as of August 1st, 2011. Below is a table for each of the four main climate sites across east central Florida, showing the previous 1971-2000 monthly and annual Normals and comparing them to the new 1981-2010 Normals.

Caution should be used in making specific conclusions, especially in terms of climate change, about the adjustments that occurred with the new Normals. This is due to the fact that differences between the two could be due to several factors, including station moves, methodology modifications in how the Normals are computed, and instrumentation changes.      
 
The 1981-2010 Normals database for all U.S. stations, as well as a list of Frequently Asked Questions, can be found at the following website:
 
http://www.ncdc.noaa.gov/oa/climate/normals/usnormals.html

                          Orlando            
                             
        JAN        FEB      MAR       APR      MAY       JUN       JUL      AUG       SEP      OCT      NOV       DEC     ANN  
Max Temp (1971-2000) 71.8 73.9 78.8 83 88.2 91 92.2 92 90.3 85 78.9 73.3 83.2  
Max Temp (1981-2010) 71.2 73.9 78 82.5 88.1 90.7 91.8 91.6 89.5 84.6 78.4 72.8 82.8  
Difference -0.6 0 -0.8 -0.5 -0.1 -0.3 -0.4 -0.4 -0.8 -0.4 -0.5 -0.5 -0.4  
Min Temp (1971-2000) 49.9 51.3 55.9 59.9 65.9 71.3 72.6 73 71.9 65.5 58.7 52.6 62.4  
Min Temp (1981-2010) 49.2 52.1 55.8 60 66.4 72 73.6 74.1 72.7 66.4 58.6 52.4 62.8  
Difference -0.7 0.8 -0.1 0.1 0.5 0.7 1 1.1 0.8 0.9 -0.1 -0.2 0.4  
Mean Temp (1971-2000) 60.9 62.6 67.4 71.5 77.1 81.2 82.4 82.5 81.1 75.3 68.8 63 72.8  
Mean Temp (1981-2010) 60.2 63 66.9 71.2 77.3 81.4 82.7 82.8 81.1 75.5 68.5 62.6 72.8  
Difference -0.7 0.4 -0.5 -0.3 0.2 0.2 0.3 0.3 0 0.2 -0.3 -0.4 0  
Rainfall (1971-2000) 2.43 2.35 3.54 2.42 3.74 7.35 7.15 6.25 5.76 2.73 2.32 2.31 48.35  
Rainfall (1981-2010) 2.35 2.38 3.77 2.68 3.45 7.58 7.27 7.13 6.06 3.31 2.17 2.58 50.73  
Difference -0.08 0.03 0.23 0.26 -0.29 0.23 0.12 0.88 0.3 0.58 -0.15 0.27 2.38  
                             
                             
                      Melbourne            
                             
        JAN        FEB      MAR       APR      MAY       JUN       JUL      AUG       SEP      OCT      NOV       DEC     ANN  
Max Temp (1971-2000) 71.7 72.9 77.2 80.5 85 88.6 90.5 90 88.1 83.3 78.3 73.3 81.6  
Max Temp (1981-2010) 71.4 73.6 76.7 80.8 85.6 89.1 90.7 90.5 88.4 84.1 78.5 73.3 81.9  
Difference -0.3 0.7 -0.5 0.3 0.6 0.5 0.2 0.5 0.3 0.8 0.2 0 0.3  
Min Temp (1971-2000) 50 50.8 55.2 60.1 66.3 71.2 71.9 72.7 71.9 67.4 60 53 62.5  
Min Temp (1981-2010) 49.2 51.7 55.1 60 67 71.7 72.6 73.2 72.7 67.9 59.5 52.8 62.8  
Difference -0.8 0.9 -0.1 -0.1 0.7 0.5 0.7 0.5 0.8 0.5 -0.5 -0.2 0.3  
Mean Temp (1971-2000) 60.9 61.9 66.2 70.3 75.7 79.9 81.2 81.4 80 75.4 69.2 63.2 72.1  
Mean Temp (1981-2010) 60.3 62.7 65.9 70.4 76.3 80.4 81.7 81.8 80.6 76 69 63 72.4  
Difference -0.6 0.8 -0.3 0.1 0.6 0.5 0.5 0.4 0.6 0.6 -0.2 -0.2 0.3  
Rainfall (1971-2000) 2.48 2.49 2.92 2.08 3.94 5.83 5.38 5.78 7.2 4.76 3.12 2.31 48.29  
Rainfall (1981-2010) 2.27 2.53 3.28 2.13 3.29 6.71 5.96 7.68 7.64 5.06 2.88 2.57 52  
Difference -0.21 0.04 0.36 0.05 -0.65 0.88 0.58 1.9 0.44 0.3 -0.24 0.26 3.71  
                             
                             
                 Daytona Beach            
                             
        JAN        FEB      MAR       APR      MAY       JUN       JUL      AUG       SEP      OCT      NOV       DEC     ANN  
Max Temp (1971-2000) 69.7 71.1 75.6 79.8 85 88.8 91 90.1 87.9 82.6 76.9 71.4 80.8  
Max Temp (1981-2010) 68.4 70.7 74.5 79.2 84.7 88.4 90.2 89.6 86.9 82 76 70.4 80.1  
Difference -1.3 -0.4 -1.1 -0.6 -0.3 -0.4 -0.8 -0.5 -1 -0.6 -0.9 -1 -0.7  
Min Temp (1971-2000) 47.1 48.8 53.7 58 64.5 70.6 72.4 72.8 71.9 65.3 57 50.1 61  
Min Temp (1981-2010) 47.3 50.1 54.2 58.6 65.4 71.4 73 73.4 72.2 65.9 57.3 50.5 61.7  
Difference 0.2 1.3 0.5 0.6 0.9 0.8 0.6 0.6 0.3 0.6 0.3 0.4 0.7  
Mean Temp (1971-2000) 58.4 60 64.7 68.9 74.8 79.7 81.7 81.5 79.9 74 67 60.8 71  
Mean Temp (1981-2010) 57.9 60.4 64.3 68.9 75 79.9 81.6 81.5 79.5 74 66.6 60.5 70.9  
Difference -0.5 0.4 -0.4 0 0.2 0.2 -0.1 0 -0.4 0 -0.4 -0.3 -0.1  
Rainfall (1971-2000) 3.13 2.74 3.84 2.54 3.26 5.69 5.17 6.09 6.61 4.48 3.03 2.71 49.29  
Rainfall (1981-2010) 2.74 2.78 4.24 2.18 3.13 5.83 5.83 6.4 6.96 4.21 2.69 2.63 49.62  
Difference -0.39 0.04 0.4 -0.36 -0.13 0.14 0.66 0.31 0.35 -0.27 -0.34 -0.08 0.33  
                             
                             
                      Vero Beach            
                             
        JAN        FEB      MAR       APR      MAY       JUN       JUL      AUG       SEP      OCT      NOV       DEC     ANN  
Max Temp (1971-2000) 73.3 74.1 77.6 81.4 85.2 89 90.4 90.2 88.7 84.3 79.1 74.7 82.3  
Max Temp (1981-2010) 72.4 74.5 77.2 80.5 84.8 88.3 90 89.8 88 84.2 78.9 74.2 81.9  
Difference -0.9 0.4 -0.4 -0.9 -0.4 -0.7 -0.4 -0.4 -0.7 -0.1 -0.2 -0.5 -0.4  
Min Temp (1971-2000) 52.7 53.6 57.8 61.6 67.2 71.8 73 72.9 72.7 68.5 61.9 54.7 64  
Min Temp (1981-2010) 51.7 54.1 57.6 61.2 67.6 72.1 73.4 73.6 73.3 68.9 61.5 55 64.2  
Difference -1 0.5 -0.2 -0.4 0.4 0.3 0.4 0.7 0.6 0.4 -0.4 0.3 0.2  
Mean Temp (1971-2000) 63 63.9 67.7 71.5 76.2 80.4 81.7 81.6 80.7 76.4 70.5 64.7 73.2  
Mean Temp (1981-2010) 62.1 64.3 67.4 70.9 76.2 80.2 81.7 81.7 80.6 76.5 70.2 64.6 73.1  
Difference -0.9 0.4 -0.3 -0.6 0 -0.2 0 0.1 -0.1 0.1 -0.3 -0.1 -0.1  
Rainfall (1971-2000) 2.89 2.45 4.2 2.88 3.8 6.03 6.53 6.04 6.84 5.04 3.04 2.19 51.93  
Rainfall (1981-2010) 2.5 2.67 4.12 2.72 3.36 6.67 5.63 7.03 6.79 4.91 3.28 2.19 51.87  
Difference -0.39 0.22 -0.08 -0.16 -0.44 0.64 -0.9 0.99 -0.05 -0.13 0.24 0 -0.06  
                             
                             
        Increase From Previous 1971-2000 Normal Value            
                             
        No Change From Previous 1971-2000 Normal Value            
                             
        Decrease From Previous 1971-2000 Normal Value            
                             
                             


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