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Key findings

  • The highest monthly average temperature in Lena for July is 71.8 degrees
  • The lowest monthly average temperature in Lena for January is 21.7 degrees
  • The most monthly precipitation in Lena occurs in August with 7.3 inches
  • The air quality index in Lena is 16% better than the national average
  • The pollution index in Lena is 74% better than the national average

Compare Lena, IL Weather

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      Lena 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
      January14°F30°F22°F2.9"
      February15°F31°F23°F2.3"
      March29°F47°F37°F3.6"
      April38°F61°F48°F5.4"
      May49°F72°F60°F5.5"
      June58°F80°F69°F6.3"
      July62°F82°F72°F5.8"
      August60°F81°F70°F7.3"
      September52°F75°F63°F4.7"
      October42°F62°F51°F5.8"
      November30°F48°F39°F4.0"
      December19°F33°F26°F3.4"

      Lena 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.
      IndexLenaIllinoisNational
      Air quality index424150
      Pollution index701,0523,148,6942,726,193

      Lena air quality information

      MeasurementTotal
      Days measured341
      Days with good air quality240
      Days with moderate air quality100
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Lena air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.040%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Lena temperature with heat index

      Lena monthly precipitation with daily maximum

      Lena monthly snow depth with daily maximum

      Lena monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Browntown, WI2972942.0%
      Stockton, IL1,8772942.0%
      South Wayne, WI4412942.0%
      Apple River, IL4512942.0%
      Nora, IL1572942.0%
      Lena, IL2,8764216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Santa Rosa, TX2,8764216.0%
      Osage City, KS2,8752256.0%
      West Ishpeming, MI2,875884.0%
      Hahira, GA2,8773530.0%
      Springdale, NL2,877n/a 
      Lena, IL2,8764216.0%
      Source: The Lena, IL 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.