|
MONTANA
/ Missoula
Latitude (N): 46.92
Longitude
(W): 114.08
Elevation (feet): 3,189
Annual Precipitation (inches): 13
Annual heating degree days (base 65 deg. F): 7,840
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
43 deg.
|
67 deg.
|
43 deg.
|
19 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
3.2 |
6.3 |
4.2 |
1.1 |
|
BTU/ft2
|
1,015 |
1,998 |
1,332 |
349 |
| On
vertical surface |
|
kWh/m2
|
3.3 |
2.9 |
4.0 |
1.9 |
|
BTU/ft2
|
1,047 |
920 |
1,269 |
603 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
25 |
46 |
40 |
16 |
| Daily
Max. - Degrees F |
47 |
74 |
71 |
30 |
| Wind
Speed - miles/hour |
6.7 |
7.4 |
6.3 |
4.9 |
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