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> WEATHER DATA

CALIFORNIA / San Francisco
Latitude (N): 37.62
Longitude (W): 122.38
Elevation (feet): 16
Annual Precipitation (inches): 19
Annual heating degree days (base 65 deg. F): 2,750

APPROXIMATE SUN ANGLE (at noon facing due south)

Mar 21
June 21
Sept 21
Dec 21
52 deg.
76 deg.
52 deg.
28 deg.



AVERAGE DAILY SOLAR RADIATION

 
March
June
September
December
On horizontal surface
kWh/m2
4.2 7.2 5.4 2.0
BTU/ft2
1,332 2,284 1,713 634
On vertical surface
kWh/m2
3.7 2.5 4.1 3.3
BTU/ft2
1,174 793 1,301 1,047


AVERAGE TEMPERATURE AND WIND SPEED

 
March
June
September
December
Daily Min. - Degrees F 46 53 55 43
Daily Max. - Degrees F 61 70 74 56
Wind Speed - miles/hour 10.7 13.9 11.2 7.8

 

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