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> WEATHER DATA

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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