|
WASHINGTON
/ Spokane
Latitude (N): 47.63
Longitude
(W): 117.53
Elevation (feet): 2,336
Annual Precipitation (inches): 17
Annual heating degree days (base 65 deg. F): 6,880
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
42 deg.
|
66 deg.
|
42 deg.
|
18 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
3.2 |
6.5 |
4.4 |
1.1 |
|
BTU/ft2
|
1,015 |
2,062 |
1,396 |
349 |
| On
vertical surface |
|
kWh/m2
|
3.5 |
3.1 |
4.3 |
2.0 |
|
BTU/ft2
|
1,110 |
983 |
1,364 |
634 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
30 |
49 |
46 |
22 |
| Daily
Max. - Degrees F |
48 |
75 |
72 |
34 |
| Wind
Speed - miles/hour |
10.1 |
9.6 |
8.7 |
8.3 |
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