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> WEATHER DATA

TEXAS / Brownsville
Latitude (N): 25.90
Longitude (W): 97.43
Elevation (feet):
20
Annual Precipitation (inches):
25
Annual heating degree days (base 65 deg. F): 610

APPROXIMATE SUN ANGLE (at noon facing due south)

Mar 21
June 21
Sept 21
Dec 21
64 deg.
88 deg.
64 deg.
40 deg.



AVERAGE DAILY SOLAR RADIATION

 
March
June
September
December
On horizontal surface
kWh/m2
4.6 6.4 5.2 2.7
BTU/ft2
1,459 2,030 1,649 856
On vertical surface
kWh/m2
3.0 1.6 2.9 3.1
BTU/ft2
952 508 920 983


AVERAGE TEMPERATURE AND WIND SPEED

 
March
June
September
December
Daily Min. - Degrees F 59 75 73 52
Daily Max. - Degrees F 78 91 90 72
Wind Speed - miles/hour 13.2 11.4 9.4 10.7

 

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