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> WEATHER DATA

MICHIGAN / Detroit
Latitude (N): 42.42
Longitude (W): 83.02
Elevation (feet):
627
Annual Precipitation (inches):
32
Annual heating degree days (base 65 deg. F): 6,560

APPROXIMATE SUN ANGLE (at noon facing due south)

Mar 21
June 21
Sept 21
Dec 21
48 deg.
72 deg.
48 deg.
24 deg.



AVERAGE DAILY SOLAR RADIATION

 
March
June
September
December
On horizontal surface
kWh/m2
3.4 6.2 4.1 1.3
BTU/ft2
1,078 1,967 1,301 412
On vertical surface
kWh/m2
3.2 2.7 3.3 2.0
BTU/ft2
1,015 856 1,047 634


AVERAGE TEMPERATURE AND WIND SPEED

 
March
June
September
December
Daily Min. - Degrees F 27 56 53 21
Daily Max. - Degrees F 44 79 74 35
Wind Speed - miles/hour 11.9 9.4 8.7 11.4

 

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