TODAY MAR04
TEMPERATURE41
HUMIDITY70
PRESSURE30.04
WIND COND.310 11.2
  • 4323Thu
  • 4223Fri
  • 4223Sat
  • 4631Sun
  • 5540Mon
daynightWeather update from Auburn De Kalb County Airport at

Key findings

  • The highest monthly average temperature in Harlan for July is 74 degrees
  • The lowest monthly average temperature in Harlan for January is 26 degrees
  • The most monthly precipitation in Harlan occurs in June with 5.1 inches
  • The air quality index in Harlan is 10% better than the national average
  • The pollution index in Harlan is 45% better than the national average

Compare Harlan, IN Weather

      vs
      How would you rate the weather in Harlan?
      Write a review to give others more information about this area.
      How would you rate the air quality in Harlan?
      Write a review to give others more information about this area.
      See all Harlan poll results

      Harlan 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
      January17°F35°F26°F2.9"
      February18°F37°F27°F2.4"
      March28°F51°F39°F3.1"
      April38°F65°F51°F4.0"
      May49°F75°F62°F4.9"
      June59°F84°F71°F5.1"
      July62°F86°F74°F4.1"
      August60°F84°F72°F4.4"
      September53°F79°F65°F3.3"
      October42°F67°F53°F2.9"
      November31°F53°F42°F3.2"
      December23°F39°F31°F3.1"

      Harlan 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.
      IndexHarlanIndianaNational
      Air quality index455650
      Pollution index2,775,8703,773,6185,066,862

      Harlan air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality236
      Days with moderate air quality128
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Harlan air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.020%
      Carbon Tetrachloride0.002%
      Lead0.380%
      Mercury0.030%

      Average monthly Harlan temperature with heat index

      Harlan monthly precipitation with daily maximum

      Harlan monthly snow depth with daily maximum

      Harlan monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Garrett, IN6,6204510%
      Leo-Cedarville, IN3,7214510%
      Antwerp, OH1,5224510%
      Hicksville, OH3,1104510%
      Fort Wayne, IN260,9544510%
      Harlan, IN1,4864510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Osseo, WI1,4863432%
      Culver, OR1,4862354%
      Greenville, VA1,4853628%
      Akron, IN1,4853726%
      Blue Ridge, GA1,4854314%
      Harlan, IN1,4864510%
      Source: The Harlan, IN 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.