|
TEXAS
/ Houston
Latitude (N): 29.98
Longitude
(W): 95.37
Elevation (feet): 108
Annual Precipitation (inches): 46
Annual heating degree days (base 65 deg. F): 1,550
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
60 deg.
|
84 deg.
|
60 deg.
|
36 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
4.2 |
6.0 |
4.9 |
2.5 |
|
BTU/ft2
|
1,332 |
1,903 |
1,554 |
793 |
| On
vertical surface |
|
kWh/m2
|
3.0 |
1.8 |
3.0 |
3.2 |
|
BTU/ft2
|
952 |
571 |
952 |
1,015 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
50 |
71 |
68 |
42 |
| Daily
Max. - Degrees F |
71 |
90 |
88 |
65 |
| Wind
Speed - miles/hour |
9.8 |
8.1 |
7.4 |
8.7 |
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