TODAY NOV21
TEMPERATURE37
HUMIDITY56
PRESSURE102340
WIND COND.300 24.1
  • 4928Fri
  • 5743Sat
  • 6535Sun
  • 4523Mon
  • 4226Tue
daynightWeather update from Lee's Summit, Lee's Summit Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Grain Valley for July is 79.1 degrees
  • The lowest monthly average temperature in Grain Valley for January is 31 degrees
  • The most monthly precipitation in Grain Valley occurs in May with 5.7 inches
  • The air quality index in Grain Valley is 12% worse than the national average
  • The pollution index in Grain Valley is 70% better than the national average

Compare Grain Valley, MO Weather

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      Grain Valley 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
      January22°F42°F31°F0.7"
      February24°F45°F33°F1.3"
      March38°F59°F47°F2.5"
      April47°F68°F56°F4.5"
      May56°F76°F65°F5.7"
      June66°F86°F76°F5.1"
      July70°F89°F79°F4.6"
      August68°F88°F77°F4.7"
      September60°F80°F69°F3.4"
      October48°F69°F58°F3.5"
      November38°F57°F46°F2.0"
      December26°F44°F34°F1.5"

      Grain Valley 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.
      IndexGrain ValleyMissouriNational
      Air quality index479742
      Pollution index814,0871,630,2552,726,193

      Grain Valley air quality

      MeasurementTotal
      Days measured365
      Days with good air quality210
      Days with moderate air quality154
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Grain Valley temperature with heat index

      Grain Valley monthly precipitation with daily maximum

      Grain Valley monthly snow depth with daily maximum

      Grain Valley monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bates City, MO160476.0%
      Levasy, MO68476.0%
      Unity Village, MO65476.0%
      Fleming, MO95476.0%
      Sugar Creek, MO3,281476.0%
      Grain Valley, MO14,261476.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Olympia Heights, FL14,2614118.0%
      Princeton Meadows, NJ14,2614118.0%
      Beeville, TX14,2613138.0%
      Dayton, NV14,2584118.0%
      Thames Centre, ON14,265n/a 
      Grain Valley, MO14,261476.0%
      Source: The Grain Valley, MO 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.