|
SOUTH
DAKOTA / Rapid City
Latitude (N): 44.05
Longitude
(W): 103.07
Elevation (feet): 3,169
Annual Precipitation (inches): 17
Annual heating degree days (base 65 deg. F): 7,300
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
46 deg.
|
70 deg.
|
46 deg.
|
22 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
4.0 |
6.7 |
4.7 |
1.6 |
|
BTU/ft2
|
1,269 |
2,125 |
1,491 |
508 |
| On
vertical surface |
|
kWh/m2
|
4.2 |
2.9 |
4.2 |
3.6 |
|
BTU/ft2
|
1,332 |
920 |
1,332 |
1,142 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
22 |
52 |
46 |
13 |
| Daily
Max. - Degrees F |
46 |
78 |
74 |
36 |
| Wind
Speed - miles/hour |
12.8 |
11.0 |
11.2 |
11.0 |
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