TODAY MAR19
TEMPERATURE29
HUMIDITY54
PRESSURE101800
WIND COND.230 13
  • 5830Tue
  • 4224Wed
  • 4433Thu30%
  • 4927Fri50%30%
  • 4629Sat
daynightWeather update from Marshall County Airport at
New Real Estate Listings in Roanoke Area
Search Homes for Sale in Roanoke, IL

Weather Quick Facts

  • The highest monthly average temperature in Roanoke for July is 74.3 degrees
  • The lowest monthly average temperature in Roanoke for January is 25.1 degrees
  • The most monthly precipitation in Roanoke occurs in August with 8.3 inches
  • The air quality index in Roanoke is 3% better than the national average
  • The pollution index in Roanoke is 184% worse than the national average

Compare Roanoke, IL Weather

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

      Roanoke 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
      January18°F34°F25°F3.2"
      February19°F36°F27°F3.2"
      March32°F51°F41°F5.1"
      April42°F64°F52°F6.5"
      May53°F74°F63°F7.0"
      June62°F82°F72°F7.0"
      July65°F85°F74°F7.2"
      August64°F84°F73°F8.3"
      September57°F78°F66°F7.1"
      October45°F65°F54°F6.0"
      November34°F52°F42°F4.6"
      December23°F38°F30°F3.8"

      Roanoke 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.
      IndexRoanokeIllinoisNational
      Air quality index414142
      Pollution index7,745,2003,148,6942,726,193

      Roanoke air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality285
      Days with moderate air quality78
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Roanoke air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.070%
      Carbon Tetrachloride0.020%
      Lead0.860%
      Mercury0.210%

      Average monthly Roanoke temperature with heat index

      Roanoke monthly precipitation with daily maximum

      Roanoke monthly snow depth with daily maximum

      Roanoke monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Rutland, IL2790100.0%
      Dana, IL990100.0%
      Toluca, IL1,2870100.0%
      Hopewell, IL4274118.0%
      Benson, IL4604118.0%
      Roanoke, IL1,8804118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Ellaville, GA1,8803922.0%
      Livingston, LA1,8803040.0%
      Hanson, MA1,8804314.0%
      Eagleview, PA1,8804216.0%
      Buffalo, TX1,8804118.0%
      Roanoke, IL1,8804118.0%
      Source: The Roanoke, 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.