New Climate Normals

New Climate Normals For Nashville
1981-2010*


Nashville ASOS (Automated Surface Observing Station) International Airport**
Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temp 46.9 51.9 61.0 70.5 78.2 86.0 89.3 89.0 82.4 71.7 60.3 49.5
Mean Temp 37.7 41.7 50.0 59.0 67.5 75.7 79.4 78.7 71.5 60.3 49.8 40.4
Minimum Temp 28.4 31.6 39.0 47.5 56.8 65.4 69.5 68.4 60.7 48.9 39.4 31.3
Cooling Deg Days 0 0 8 37 134 324 446 425 220 46 5 1
Heating Deg Days 848 653 473 217 57 3 0 0 24 191 459 763
Precip (Inches) 3.75 3.94 4.11 4.00 5.50 4.14 3.64 3.17 3.41 3.04 4.31 4.24
Snowfall (Inches) 2.6 2.3 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5

 *Takes effect August 1st 2011
**All Data from National Climatic Data Center

Climate Normals For Nashville International Airport
1971-2000

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temp 45.6 51.4 60.7 69.8 77.5 85.1 88.7 87.8 81.5 71.1 59.0 49.4
Mean Temp 36.8 41.3 50.1 58.5 67.1 75.1 79.1 77.9 71.3 59.9 49.3 40.5
Minimum Temp 27.9 31.2 39.4 47.1 56.7 65.0 69.5 68.0 61.0 48.6 39.5 31.5
Cooling Deg Days 0 0 0 37 136 321 453 416 229 46 5 0
Heating Deg Days 859 664 462 217 56 2 0 0 24 189 460 744
Precip (Inches) 3.97 3.69 4.87 3.93 5.07 4.08 3.77 3.28 3.59 2.87 4.45 4.54
**Snowfall (Inches) 3.3 3.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.6
**Snowfall from personal database (bboyd) otherwise NCDC
(NCDC snowfall database incomplete from 1996-2005 )
 


Difference between 1981-2010 and 1971-2000 Normals at Nashville

Normal Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Annual   +/-
Maximum Temp  +1.3  +0.5  +0.3  +0.7  +0.7  +0.9  +0.6  +1.2  +0.9  +0.6  +1.3  +0.1  +0.8
Mean Temp  +0.9  +0.4  -0.1  +0.5  +0.4  +0.6  +0.3  +0.8  +0.2  +0.4  +0.5  -0.1  +0.4
Minimum Temp  +0.5  +0.4  -0.4  +0.4  +0.1  +0.4  0  +0.4  -0.3  +0.3  -0.1  -0.2  +0.1
Cooling Deg Days  0  0  +8  0  -2  +3  -7  +9  -9  0  0  +1  <1
Heating Deg Days  -11  -11  +11  0  +1  +1  0  0  0  +2  -1  +19  +1
Precip (Inches)  -.22  +.25  -.76  +.07  +.43  +.06  -.13  -.11  -.18  +.17  -.14  -.30  -.86
Snowfall (Inches)  -0.7  -0.7  -0.1  0.0  0.0  0.0  0.0  0.0  0.0  0.0  -0.1  -0.1  -1.7


 

Link below provides frequently asked questions about the new climate normals

www.ncdc.noaa.gov/oa/climate/normals/newnormals.html




Bobby Boyd
Meteorologist
NWS Nashville TN

 

 

 


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