|
TENNESSEE
/ Chattanooga
Latitude (N): 35.03
Longitude
(W): 85.20
Elevation (feet): 689
Annual Precipitation (inches): 53
Annual heating degree days (base 65 deg. F): 3,580
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
|
4.1 |
6.1 |
4.5 |
2.1 |
|
BTU/ft2
|
1,301 |
1,935 |
1,427 |
666 |
| On
vertical surface |
|
kWh/m2
|
3.2 |
2.2 |
3.1 |
3.0 |
|
BTU/ft2
|
1,015 |
698 |
983 |
952 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
39 |
64 |
63 |
31 |
| Daily
Max. - Degrees F |
62 |
86 |
82 |
51 |
| Wind
Speed - miles/hour |
7.6 |
5.1 |
4.9 |
6.5 |
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