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> WEATHER DATA

ARKANSAS / Fort Smith
Latitude (N): 35.33
Longitude (W): 94.37
Elevation (feet): 463
Annual Precipitation (inches): 40
Annual heating degree days (base 65 deg. F): 3,480

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 6.5 4.8 2.3
BTU/ft2
1,396 2,062 1,523 730
On vertical surface
kWh/m2
3.5 2.2 3.4 3.6
BTU/ft2
1,110 698 1,078 1,142


AVERAGE TEMPERATURE AND WIND SPEED

 
March
June
September
December
Daily Min. - Degrees F 39 66 62 29
Daily Max. - Degrees F 64 88 85 51
Wind Speed - miles/hour 9.4 6.5 6.7 8.3

 

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