TODAY NOV21
TEMPERATURE29
HUMIDITY78
PRESSURE101970
WIND COND.320 25.9
  • 4527Fri
  • 5038Sat
  • 5830Sun
  • 4020Mon
  • 3821Tue
daynightWeather update from Lamoni, Lamoni Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Grand River for July is 76.2 degrees
  • The lowest monthly average temperature in Grand River for January is 23.9 degrees
  • The most monthly precipitation in Grand River occurs in August with 10.2 inches
  • The air quality index in Grand River is 7% better than the national average
  • The pollution index in Grand River is 76% better than the national average

Compare Grand River, IA Weather

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      Grand River 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°F33°F24°F2.8"
      February20°F37°F27°F3.3"
      March33°F55°F43°F3.3"
      April42°F63°F51°F6.4"
      May53°F74°F63°F7.9"
      June63°F82°F72°F9.5"
      July66°F87°F76°F3.7"
      August67°F87°F76°F10.2"
      September57°F79°F67°F7.1"
      October46°F66°F55°F5.5"
      November32°F52°F41°F3.2"
      December18°F33°F25°F3.4"

      Grand River 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.
      IndexGrand RiverIowaNational
      Air quality index393942
      Pollution index648,8291,154,5352,726,193

      Grand River air quality

      MeasurementTotal
      Days measured365
      Days with good air quality306
      Days with moderate air quality59
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly Grand River temperature with heat index

      Grand River monthly precipitation with daily maximum

      Grand River monthly snow depth with daily maximum

      Grand River monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Thayer, IA243922.0%
      Leon, IA1,8833922.0%
      Ellston, IA373922.0%
      Lamoni, IA2,3393922.0%
      Arispe, IA1033922.0%
      Grand River, IA1933922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Russian Mission, AK1933138.0%
      Rackerby, CA1934412.0%
      Oakford, IL1934020.0%
      Severy, KS1932256.0%
      Thornhill, KY193492.0%
      Grand River, IA1933922.0%
      Source: The Grand River, 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.