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> WEATHER DATA

ALABAMA / Birmingham
Latitude (N): 33.57
Longitude (W): 86.75
Elevation (feet): 630
Annual Precipitation (inches): 56
Annual heating degree days (base 65 deg. F): 2,860

APPROXIMATE SUN ANGLE (at noon facing due south)

Mar 21
June 21
Sept 21
Dec 21
57 deg.
80 deg.
57 deg.
33 deg.



AVERAGE DAILY SOLAR RADIATION

 
March
June
September
December
On horizontal surface
kWh/m2
4.4 6.2 4.8 2.3
BTU/ft2
1,396 1,967 1,523 730
On vertical surface
kWh/m2
3.4 2.1 3.2 3.4
BTU/ft2
1,078 666 1,015 1,078


AVERAGE TEMPERATURE AND WIND SPEED

 
March
June
September
December
Daily Min. - Degrees F 42 65 63 35
Daily Max. - Degrees F 66 87 84 56
Wind Speed - miles/hour 8.5 5.8 6.3 7.4

 

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