TODAY FEB27
TEMPERATURE55
HUMIDITY43
PRESSURE29.81
WIND COND.120 16.6
  • 4326Sun
  • 4323Mon
  • 5333Tue
  • 5936Wed
  • 6134Thu
daynightWeather update from Lamoni, Lamoni Municipal Airport at

Key findings

  • The highest monthly average temperature in Grand River for July is 76 degrees
  • The lowest monthly average temperature in Grand River for January is 24 degrees
  • The most monthly precipitation in Grand River occurs in August with 10.2 inches
  • The air quality index in Grand River is 22% better than the national average
  • The pollution index in Grand River is 87% 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 index393950
      Pollution index648,8291,643,8365,066,862

      Grand River air quality information

      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

      Grand River air quality information

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Decatur City, IA2053922%
      Van Wert, IA1903922%
      Tingley, IA1773922%
      Afton, IA9673922%
      Kellerton, IA2953922%
      Grand River, IA2273922%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Wixon Valley, TX2273824%
      Conway, MI2273628%
      Goodrich, TX2274510%
      Carrsville, VA2274020%
      Pawnee Rock, KS2271570%
      Grand River, IA2273922%
      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.