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> WEATHER DATA

NORTH CAROLINA / Charlotte
Latitude (N): 35.22
Longitude (W): 80.93
Elevation (feet):
768
Annual Precipitation (inches):
43
Annual heating degree days (base 65 deg. F): 3,340

APPROXIMATE SUN ANGLE (at noon facing due south)

Mar 21
June 21
Sept 21
Dec 21
55 deg.
79 deg.
55 deg.
31 deg.



AVERAGE DAILY SOLAR RADIATION

 
March
June
September
December
On horizontal surface
kWh/m2
4.4 6.3 4.7 2.3
BTU/ft2
1,396 1,998 1,491 730
On vertical surface
kWh/m2
3.6 2.2 3.3 3.5
BTU/ft2
1,142 698 1,047 1,110


AVERAGE TEMPERATURE AND WIND SPEED

 
March
June
September
December
Daily Min. - Degrees F 38 66 63 31
Daily Max. - Degrees F 62 86 82 52
Wind Speed - miles/hour 8.7 6.9 6.5 7.4

 

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