|
WEST
VIRGINIA / Charleston
Latitude (N): 38.37
Longitude
(W): 81.60
Elevation (feet): 951
Annual Precipitation (inches): 42
Annual heating degree days (base 65 deg. F): 4,700
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
|
3.7 |
6.0 |
4.3 |
1.7 |
|
BTU/ft2
|
1,174 |
1,903 |
1,364 |
539 |
| On
vertical surface |
|
kWh/m2
|
3.2 |
2.4 |
3.2 |
2.5 |
|
BTU/ft2
|
1,015 |
761 |
1,015 |
793 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
35 |
60 |
56 |
28 |
| Daily
Max. - Degrees F |
57 |
83 |
79 |
46 |
| Wind
Speed - miles/hour |
7.6 |
5.1 |
4.7 |
6.7 |
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