Harpers Ferry, IA Weather - Forecast & Monthly Averages

TEMPERATURE	18
HUMIDITY	66
PRESSURE	102910
WIND COND.	110 7.6

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Weather Quick Facts

The highest monthly average temperature in Harpers Ferry for July is 72.7 degrees
The lowest monthly average temperature in Harpers Ferry for January is 20.7 degrees
The most monthly precipitation in Harpers Ferry occurs in June with 8 inches
The air quality index in Harpers Ferry is 17% better than the national average
The pollution index in Harpers Ferry is 30% better than the national average

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Harpers Ferry 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	13°F	29°F	21°F	1.4"
February	14°F	32°F	22°F	1.1"
March	28°F	47°F	37°F	2.8"
April	39°F	61°F	49°F	4.6"
May	50°F	72°F	60°F	5.1"
June	60°F	80°F	69°F	8.0"
July	63°F	84°F	73°F	5.2"
August	61°F	82°F	71°F	5.1"
September	54°F	76°F	63°F	4.2"
October	43°F	63°F	52°F	4.1"
November	31°F	49°F	39°F	3.2"
December	18°F	33°F	26°F	3.2"

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Harpers Ferry 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	Harpers Ferry	Iowa	National
Air quality index	35	39	42
Pollution index	1,904,120	1,154,535	2,726,193

Harpers Ferry air quality

Measurement	Total
Days measured	365
Days with good air quality	310
Days with moderate air quality	55
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.040%
Benzene	0.020%
Carbon Tetrachloride	0.001%
Lead	0.010%
Mercury	0.050%

Average monthly Harpers Ferry temperature with heat index

Harpers Ferry monthly precipitation with daily maximum

Harpers Ferry monthly snow depth with daily maximum

Harpers Ferry monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Monona, IA	1,639	29	42.0%
Wauzeka, WI	671	29	42.0%
Prairie du Chien, WI	5,605	29	42.0%
McGregor, IA	837	29	42.0%
Marquette, IA	448	29	42.0%
Harpers Ferry, IA	248	35	30.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Trinity Village, CA	248	27	46.0%
Vernon, CA	248	72	44.0%
Bartow, GA	248	47	6.0%
Girard, GA	248	47	6.0%
Westside, IA	248	35	30.0%
Harpers Ferry, IA	248	35	30.0%

Source: The Harpers Ferry, IA 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.