Belle Fourche, SD Weather - Forecast & Monthly Averages

TEMPERATURE	46
HUMIDITY	42
PRESSURE
WIND COND.	290 16.6

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Weather Quick Facts

The highest monthly average temperature in Belle Fourche for July is 74.8 degrees
The lowest monthly average temperature in Belle Fourche for December is 24.3 degrees
The most monthly precipitation in Belle Fourche occurs in August with 6.4 inches
The air quality index in Belle Fourche is 5% worse than the national average
The pollution index in Belle Fourche is 82% better than the national average

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Belle Fourche Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	15°F	38°F	26°F	0.8"
February	16°F	40°F	27°F	1.2"
March	26°F	53°F	38°F	2.5"
April	33°F	59°F	45°F	4.6"
May	43°F	68°F	55°F	6.2"
June	54°F	81°F	67°F	5.1"
July	61°F	89°F	75°F	3.4"
August	59°F	87°F	72°F	6.4"
September	50°F	79°F	63°F	4.3"
October	37°F	63°F	49°F	5.6"
November	25°F	51°F	37°F	3.2"
December	14°F	36°F	24°F	1.6"

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Belle Fourche air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Belle Fourche	South Dakota	National
Air quality index	44	36	42
Pollution index	486,607	345,623	2,726,193

Belle Fourche air quality

Measurement	Total
Days measured	365
Days with good air quality	274
Days with moderate air quality	87
Days w/ poor A.Q. for sensitive groups	4
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.003%
Benzene	0.010%
Carbon Tetrachloride	0.001%
Lead	0.080%
Mercury	0.001%

Average monthly Belle Fourche temperature with heat index

Belle Fourche monthly precipitation with daily maximum

Belle Fourche monthly snow depth with daily maximum

Belle Fourche monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
St. Onge, SD	25	44	12.0%
Spearfish, SD	11,702	44	12.0%
Fruitdale, SD	97	44	12.0%
Whitewood, SD	986	44	12.0%
North Spearfish, SD	2,251	44	12.0%
Belle Fourche, SD	5,628	44	12.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Trooper, PA	5,626	51	2.0%
Lac-Brome, QC	5,626	n/a
Groveport, OH	5,630	46	8.0%
Lake Fenton, MI	5,631	38	24.0%
Turpin Hills, OH	5,631	54	8.0%
Belle Fourche, SD	5,628	44	12.0%

Source: The Belle Fourche, SD weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.