|
MICHIGAN
/ Detroit
Latitude (N): 42.42
Longitude
(W): 83.02
Elevation (feet): 627
Annual Precipitation (inches): 32
Annual heating degree days (base 65 deg. F): 6,560
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
48 deg.
|
72 deg.
|
48 deg.
|
24 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
3.4 |
6.2 |
4.1 |
1.3 |
|
BTU/ft2
|
1,078 |
1,967 |
1,301 |
412 |
| On
vertical surface |
|
kWh/m2
|
3.2 |
2.7 |
3.3 |
2.0 |
|
BTU/ft2
|
1,015 |
856 |
1,047 |
634 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
27 |
56 |
53 |
21 |
| Daily
Max. - Degrees F |
44 |
79 |
74 |
35 |
| Wind
Speed - miles/hour |
11.9 |
9.4 |
8.7 |
11.4 |
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