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August 12th, 2026 :: 12:16 pm CDT   

Local Weather Report for
Grain Valley
Missouri, United States

 Grain Valley Weather Forecast Summary  
 
Today
Aug 12th
Thursday
Aug 13th
Friday
Aug 14th
Saturday
Aug 15th
Sunday
Aug 16th
Mostly Sunny Mostly Sunny Mostly Sunny Sunny Mostly Sunny
100°F
104°F
71°F
106°F
74°F
107°F
82°F
103°F
73°F
 
 Grain Valley Detailed Weather Forecast  
 
Wednesday, August 12th, 2026
Afternoon Temperature: 98°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 90°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Thursday, August 13th, 2026
Overnight Temperature: 74°F
Mostly clear with a slight chance of showers.
Morning Temperature: 79°F
Mostly sunny. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 101°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 93°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Friday, August 14th, 2026
Overnight Temperature: 74°F
Mostly clear with a chance of showers. Windy at times.
Morning Temperature: 80°F
A mix of sun and cloud. Windy at times.
Afternoon Temperature: 102°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 93°F
Clear. Chance of a thunderstorm. Windy at times.
Saturday, August 15th, 2026
Overnight Temperature: 87°F
Clear. Windy at times.
Morning Temperature: 84°F
Sunny. Windy at times.
Afternoon Temperature: 104°F
Sunny. Windy at times.
Evening Temperature: 93°F
Clear. Slight chance of a thunderstorm. Windy at times.
Sunday, August 16th, 2026
Overnight Temperature: 80°F
Clear.
Morning Temperature: 82°F
Sunny.
Afternoon Temperature: 101°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 77°F
A mix of cloudy and clear skies with a chance of showers or thundershowers. Windy.
Monday, August 17th, 2026
Overnight Temperature: 70°F
A mix of cloudy and clear skies with a chance of showers. Windy at times.
Morning Temperature: 72°F
A mix of cloud and sun.
Afternoon Temperature: 88°F
Mostly sunny. Slight chance of a thunderstorm.
Evening Temperature: 82°F
Clear. Chance of a thunderstorm.
Tuesday, August 18th, 2026
Overnight Temperature: 71°F
Clear.
Morning Temperature: 75°F
Mostly sunny. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 96°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 88°F
Clear. Chance of a thunderstorm. Windy at times.
Wednesday, August 19th, 2026
Overnight Temperature: 76°F
Mostly clear with a slight chance of showers.
Morning Temperature: 79°F
Sunny with cloudy periods with a slight chance of showers or thundershowers.
Afternoon Temperature: 99°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 88°F
Clear. Chance of a thunderstorm. Windy at times.
Thursday, August 20th, 2026
Overnight Temperature: 78°F
Clear. Slight chance of a thunderstorm.
Morning Temperature: 83°F
Sunny. Windy.
Afternoon Temperature: 108°F
A mix of sun and cloud. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 99°F
A mix of cloudy and clear skies. Windy.





 

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This WeatherCity Weather Forecast for Grain Valley, Missouri, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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