TODAY FEB27
TEMPERATURE36
HUMIDITY93
PRESSURE29.99
WIND COND.180 13
  • 5128Sun
  • 5229Mon
  • 5435Tue
  • 6240Wed
  • 6041Thu
daynightWeather update from Lee's Summit, Lee's Summit Municipal Airport at

Key findings

  • The highest monthly average temperature in Grain Valley for July is 79 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 5% better than the national average
  • The pollution index in Grain Valley is 84% 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 index479750
      Pollution index814,0872,360,5665,066,862

      Grain Valley air quality information

      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

      Grain Valley air quality information

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Lake Tapawingo, MO718476%
      Lake Lotawana, MO2,274476%
      Pleasant Hill, MO8,272476%
      Pleasant Valley, MO3,043476%
      Buckner, MO3,082476%
      Grain Valley, MO13,273476%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      University Heights, OH13,27350= 100
      Homosassa Springs, FL13,2733040%
      South Sioux City, NE13,2683530%
      New Ulm, MN13,2793236%
      Hamilton Square, NJ13,2654118%
      Grain Valley, MO13,273476%
      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.