|
WISCONSIN
/ Madison
Latitude (N): 43.13
Longitude
(W): 89.33
Elevation (feet): 859
Annual Precipitation (inches): 31
Annual heating degree days (base 65 deg. F): 7,640
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
47 deg.
|
71 deg.
|
47 deg.
|
23 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
3.7 |
6.4 |
4.1 |
1.5 |
|
BTU/ft2
|
1,174 |
2,030 |
1,301 |
476 |
| On
vertical surface |
|
kWh/m2
|
3.7 |
2.8 |
3.4 |
2.7 |
|
BTU/ft2
|
1,174 |
888 |
1,078 |
856 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
23 |
54 |
48 |
13 |
| Daily
Max. - Degrees F |
42 |
78 |
71 |
30 |
| Wind
Speed - miles/hour |
11.0 |
8.9 |
8.5 |
10.1 |
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