TODAY OCT15
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 5339Tue
  • 4832Wed
  • 5335Thu
  • 5543Fri30%
  • 5432Sat30%30%
daynightWeather update from Auburn De Kalb County Airport at
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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"

Did you know?

  • 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 5% better than the national average.
  • The pollution index in Harlan is 45% better than the national average.

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Compare Harlan, IN Weather To Other Cities

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 index475650
Pollution index2,775,8703,773,6185,066,862

Harlan air quality information

MeasurementTotal
Days measured365
Days with good air quality219
Days with moderate air quality145
Days w/ poor A.Q. for sensitive groups1
Days with unhealthy air quality

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, IN6,620476%
New Haven, IN15,677476%
Hicksville, OH3,110476%
Altona, IN226476%
Grabill, IN1,448476%
Harlan, IN1,486476%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Culver, OR1,4863530%
Osseo, WI1,486355610%
Sibley, LA1,4874314%
Linn, MO1,4853726%
Fredericksburg, PA1,4854314%
Harlan, IN1,486476%
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.