Grain Valley, MO Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Grain Valley, MO in one place.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. East southeast wind 3 to 8 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Grain Valley, MO is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 24, 2026 12:06 PM CDT.
The active forecast window currently covers May 26 to May 30, 2026 for Grain Valley, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 26 to May 30, 2026
- Latest sync
- May 24, 2026 12:06 PM CDT
- Forecast office
- EAX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grain Valley
Tuesday looks like the warmest upcoming period in Grain Valley at 83 degrees F.
Saturday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Saturday at about 6 to 10 mph ENE.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 12:06 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- EAX
- Radar station
- KEAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.
A chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 58.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
83°F |
3 to 8 mph
ESE
|
|
Tuesday Night
May 26
|
Chance Showers And Thunderstorms
|
63°F |
2 to 7 mph
ESE
|
|
Wednesday
May 27
|
Chance Showers And Thunderstorms
|
83°F |
2 to 7 mph
ESE
|
|
Wednesday Night
May 27
|
Chance Showers And Thunderstorms
|
65°F |
2 to 6 mph
ESE
|
|
Thursday
May 28
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
81°F |
6 mph
ESE
|
|
Thursday Night
May 28
|
Showers And Thunderstorms Likely
|
64°F |
5 mph
E
|
|
Friday
May 29
|
Showers And Thunderstorms Likely
|
78°F |
3 to 8 mph
E
|
|
Friday Night
May 29
|
Chance Showers And Thunderstorms
|
61°F |
7 mph
E
|
|
Saturday
May 30
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
78°F |
6 to 10 mph
ENE
|
|
Saturday Night
May 30
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
58°F |
3 to 9 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grain Valley.