TODAY OCT20
TEMPERATURE52
HUMIDITY49
PRESSURE29.91
WIND COND.280 11.4
  • 4427Sat40%
  • 5536Sun
  • 5735Mon
  • 5131Tue
  • 5236Wed
daynightWeather update from Prairie Du Chien Municipal Airport at
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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.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January13°F29°F21°F1.4"
February14°F32°F22°F1.1"
March28°F47°F37°F2.8"
April39°F61°F49°F4.6"
May50°F72°F60°F5.1"
June60°F80°F69°F8.0"
July63°F84°F73°F5.2"
August61°F82°F71°F5.1"
September54°F76°F63°F4.2"
October43°F63°F52°F4.1"
November31°F49°F39°F3.2"
December18°F33°F26°F3.2"

Did you know?

  • The highest monthly average temperature in Harpers Ferry for July is 73 degrees.
  • The lowest monthly average temperature in Harpers Ferry for January is 21 degrees.
  • The most monthly precipitation in Harpers Ferry occurs in June with 8 inches.
  • The air quality index in Harpers Ferry is 19% better than the national average.
  • The pollution index in Harpers Ferry is 62% better than the national average.

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Compare Harpers Ferry, IA Weather To Other Cities

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.
IndexHarpers FerryIowaNational
Air quality index403950
Pollution index1,904,1201,643,8365,066,862

Harpers Ferry air quality information

MeasurementTotal
Days measured361
Days with good air quality264
Days with moderate air quality97
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Harpers Ferry air quality information

PollutantTotal
Arsenic0.040%
Benzene0.020%
Carbon Tetrachloride0.001%
Lead0.010%
Mercury0.050%

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, StatePopulationAir Quality IndexNational Avg.
McGregor, IA8043236%
Eastman, WI4193236%
Prairie du Chien, WI5,7713236%
Marquette, IA4233236%
Steuben, WI883236%
Harpers Ferry, IA2684020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Mahnomen CDP, MN2683530%
Mindenmines, MO268325550%
Coffee Springs, AL2683334%
Meta, MO2683726%
Wellsville, PA2684510%
Harpers Ferry, IA2684020%
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.