Live Weather & Forecast

Weather in Grain Valley

Missouri, United States · Real-time conditions & 3-day outlook

Flag of United States
Sunny
6°C
Feels like 2°C
42°F / Feels 35°F
Sunny
Grain Valley, Missouri
🌞 Daytime
Updated: 2026-04-18 09:30
💧
Humidity
44%
💨
Wind
22.7 km/h NNW
🌬️
Wind Gust
29.4 km/h
🌡️
Pressure
1021 mb
👁️
Visibility
16 km
☀️
UV Index
1.4 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
-2.9°C
🌐
Wind Degree
335°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
164.9 μg/m³
NO₂
2.3 μg/m³
O₃
97 μg/m³
SO₂
1.7 μg/m³
PM 2.5
4.3 μg/m³
PM 10
5.2 μg/m³

Weather Alerts 5

Met · Severe · Expected
Flood Warning issued April 17 at 8:39AM CDT until April 21 at 6:09AM CDT by NWS Kansas City/Pleasant Hill MO

...The National Weather Service in Pleasant Hill MO has issued a Flood Warning for the following rivers in Missouri... Big Creek at Blairstown affecting Cass, Johnson and Henry Counties. South Grand River at Urich affecting Cass, Henry and Bates Counties. * WHAT...Moderate flooding is forecast. * WHERE...Big Creek at Blairstown. * WHEN...From this afternoon to Tuesday morning. * IMPACTS...At...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product along with additional weather and stream information is available at www.weather.gov/kc/.

Met · Severe · Expected
Flood Warning issued April 17 at 8:39AM CDT until April 20 at 9:38AM CDT by NWS Kansas City/Pleasant Hill MO

...The National Weather Service in Pleasant Hill MO has issued a Flood Warning for the following rivers in Missouri... Big Creek at Blairstown affecting Cass, Johnson and Henry Counties. South Grand River at Urich affecting Cass, Henry and Bates Counties. * WHAT...Moderate flooding is forecast. * WHERE...South Grand River at Urich. * WHEN...From late tonight to late Monday morning. * IMPACTS...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product along with additional weather and stream information is available at www.weather.gov/kc/.

Met · Severe · Immediate
Flood Warning issued April 17 at 9:38PM CDT until April 20 at 11:30AM CDT by NWS Kansas City/Pleasant Hill MO

...The Flood Warning is extended for the following rivers in Missouri... Big Creek at Blairstown affecting Cass, Johnson and Henry Counties. * WHAT...Minor flooding is forecast. * WHERE...Big Creek at Blairstown. * WHEN...Until late Monday morning. * IMPACTS...At 20.0 feet, The west bank of the creek begins to flood. At 23.0 feet, Flooding occurs at the west approach to the N Highway bridge l...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product along with additional weather and stream information is available at www.weather.gov/kc/.

Met · Severe · Immediate
Flood Warning issued April 17 at 7:43PM CDT until April 19 at 10:45AM CDT by NWS Kansas City/Pleasant Hill MO

...The Flood Warning continues for the following rivers in Missouri... Big Creek at Blairstown affecting Cass, Johnson and Henry Counties. South Grand River at Urich affecting Cass, Henry and Bates Counties. * WHAT...Minor flooding is forecast. * WHERE...South Grand River at Urich. * WHEN...From late tonight to late Sunday morning. * IMPACTS...At 24.0 feet, Flooding occurs across locations w...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product along with additional weather and stream information is available at www.weather.gov/kc/.

Met · Severe · Immediate
Flood Warning issued April 18 at 2:02AM CDT until April 19 at 4:36PM CDT by NWS Kansas City/Pleasant Hill MO

...The Flood Warning is extended for the following rivers in Missouri... South Grand River at Urich affecting Cass, Henry and Bates Counties. * WHAT...Minor flooding is forecast. * WHERE...South Grand River at Urich. * WHEN...Until tomorrow afternoon. * IMPACTS...At 24.0 feet, Flooding occurs across locations within 0.5 to 1.5 miles of the river. Areas affected include low lying pastures alon...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product along with additional weather and stream information is available at www.weather.gov/kc/.

Today's Hourly Forecast

24-hour breakdown for Grain Valley, Missouri

12 AM
Clear
10°
Clear
💧 60% 💨 28.1 km/h
1 AM
Clear
Clear
💧 68% 💨 25.9 km/h
2 AM
Clear
Clear
💧 58% 💨 23 km/h
3 AM
Clear
Clear
💧 57% 💨 22.3 km/h
4 AM
Clear
Clear
💧 60% 💨 15.8 km/h
5 AM
Clear
Clear
💧 62% 💨 19.8 km/h
6 AM
Clear
Clear
💧 60% 💨 21.2 km/h
7 AM
Sunny
Sunny
💧 62% 💨 19.1 km/h
8 AM
Sunny
Sunny
💧 58% 💨 18.7 km/h
9 AM
Sunny
Sunny
💧 44% 💨 22.7 km/h
10 AM
Sunny
Sunny
💧 52% 💨 23.4 km/h
11 AM
Sunny
10°
Sunny
💧 46% 💨 23.8 km/h
12 PM
Sunny
12°
Sunny
💧 37% 💨 23 km/h
1 PM
Sunny
14°
Sunny
💧 30% 💨 22.3 km/h
2 PM
Sunny
15°
Sunny
💧 26% 💨 20.9 km/h
3 PM
Sunny
16°
Sunny
💧 25% 💨 20.2 km/h
4 PM
Sunny
16°
Sunny
💧 24% 💨 22.7 km/h
5 PM
Sunny
16°
Sunny
💧 25% 💨 19.4 km/h
6 PM
Sunny
16°
Sunny
💧 24% 💨 13 km/h
7 PM
Sunny
14°
Sunny
💧 26% 💨 10.8 km/h
8 PM
Clear
12°
Clear
💧 27% 💨 10.8 km/h
9 PM
Clear
11°
Clear
💧 32% 💨 2.9 km/h
10 PM
Clear
10°
Clear
💧 34% 💨 9.4 km/h
11 PM
Clear
Clear
💧 37% 💨 11.5 km/h

3-Day Forecast

Daily overview for Grain Valley, Missouri

Today
Sunny
Sunny
17° /
🌧️ 0% chance of rain
💧 Avg. humidity: 44%
💨 Max wind: 28.1 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 7.1
🌅 Sunrise: 06:36 AM
🌇 Sunset: 07:58 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Sun, Apr 19
Sunny
Sunny
21° /
🌧️ 0% chance of rain
💧 Avg. humidity: 60%
💨 Max wind: 23.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.8
🌅 Sunrise: 06:34 AM
🌇 Sunset: 07:58 PM
🌙 Waxing Crescent
🌑 Moon: 3% lit
Mon, Apr 20
Sunny
Sunny
20° /
🌧️ 0% chance of rain
💧 Avg. humidity: 70%
💨 Max wind: 27 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 7.6
🌅 Sunrise: 06:33 AM
🌇 Sunset: 07:59 PM
🌙 Waxing Crescent
🌑 Moon: 9% lit

Best Time to Visit Grain Valley

Plan your trip to Grain Valley, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Grain Valley 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Grain Valley?
Current conditions in Grain Valley: Sunny, temperature 6°C, humidity 44%.
What is the best time to visit Grain Valley?
The best time to visit Grain Valley is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Grain Valley?
Grain Valley is located at approximately 39° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Grain Valley?
The wettest period in Grain Valley is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Grain Valley?
For visits to Grain Valley during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Grain Valley in?
Grain Valley is located in United States, in the state of Missouri.
What are the public holidays in Grain Valley in 2026?
View the 2026 public holidays for Grain Valley on our Holidays page.
What are the GPS coordinates used for the weather forecast in Grain Valley?
The weather forecast for Grain Valley uses coordinates 39.0188, -94.1976.