Rapid City, SD Weather - Forecast & Monthly Averages

TEMPERATURE	39
HUMIDITY	39
PRESSURE	102610
WIND COND.	350 50

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Weather Quick Facts

The highest monthly average temperature in Rapid City for July is 77.9 degrees
The lowest monthly average temperature in Rapid City for December is 24.3 degrees
The most monthly precipitation in Rapid City occurs in October with 36.4 inches
The air quality index in Rapid City is 5% worse than the national average
The pollution index in Rapid City is 28% better than the national average

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Rapid City 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	18°F	40°F	27°F	1.2"
February	18°F	40°F	27°F	1.3"
March	31°F	56°F	41°F	1.7"
April	35°F	58°F	45°F	11.2"
May	46°F	69°F	56°F	12.4"
June	57°F	81°F	68°F	3.1"
July	65°F	93°F	78°F	3.2"
August	61°F	87°F	73°F	5.4"
September	51°F	81°F	64°F	1.4"
October	40°F	64°F	50°F	36.4"
November	29°F	51°F	39°F	3.7"
December	17°F	35°F	24°F	1.5"

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Rapid City 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	Rapid City	South Dakota	National
Air quality index	44	36	42
Pollution index	1,968,790	345,623	2,726,193

Rapid City air quality information

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

Rapid City air quality information

Pollutant	Total
Arsenic	0.003%
Benzene	0.030%
Carbon Tetrachloride	0.004%
Lead	0.020%
Mercury	0.010%

Average monthly Rapid City temperature with heat index

Rapid City monthly precipitation with daily maximum

Rapid City monthly snow depth with daily maximum

Rapid City monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Ashland Heights, SD	1,082	44	12.0%
Colonial Pine Hills, SD	2,720	44	12.0%
Rapid Valley, SD	8,553	44	12.0%
Blackhawk, SD	3,029	44	12.0%
Green Valley, SD	1,252	44	12.0%
Rapid City, SD	76,541	44	12.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Temple, TX	76,590	42	16.0%
Gastonia, NC	76,635	36	28.0%
Bellflower, CA	76,339	72	44.0%
Racine, WI	76,893	39	22.0%
Hammond, IN	76,141	55	10.0%
Rapid City, SD	76,541	44	12.0%

Source: The Rapid City, 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.