|
ARKANSAS
/ Fort Smith
Latitude (N): 35.33
Longitude
(W): 94.37
Elevation (feet): 463
Annual Precipitation (inches): 40
Annual heating degree days (base 65 deg. F): 3,480
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
|
4.4 |
6.5 |
4.8 |
2.3 |
|
BTU/ft2
|
1,396 |
2,062 |
1,523 |
730 |
| On
vertical surface |
|
kWh/m2
|
3.5 |
2.2 |
3.4 |
3.6 |
|
BTU/ft2
|
1,110 |
698 |
1,078 |
1,142 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
39 |
66 |
62 |
29 |
| Daily
Max. - Degrees F |
64 |
88 |
85 |
51 |
| Wind
Speed - miles/hour |
9.4 |
6.5 |
6.7 |
8.3 |
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