Live Weather & Forecast

Weather in Union

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

Flag of United States
Sunny
24°C
Feels like 26°C
75°F / Feels 78°F
Sunny
Union, Missouri
🌞 Daytime
Updated: 2026-04-14 09:30
💧
Humidity
69%
💨
Wind
22.7 km/h SSW
🌬️
Wind Gust
29.4 km/h
🌡️
Pressure
1012 mb
👁️
Visibility
16 km
☀️
UV Index
1.7 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
18.9°C
🌐
Wind Degree
211°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
138.9 μg/m³
NO₂
1.5 μg/m³
O₃
96 μg/m³
SO₂
1 μg/m³
PM 2.5
6.1 μg/m³
PM 10
7 μg/m³

Weather Alerts 2

Met · Severe · Expected
Flood Warning issued April 13 at 11:50AM CDT until April 18 at 7:00PM CDT by NWS St Louis MO

...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Illinois...Missouri... Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Winfield. * WHEN...From late Tuesday night to Saturday evening. * ADDIT...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions...

Effective: 2026-04-13T11:50:00-05:00  ·  Expires: 2026-04-15T00:00:00-05:00
Met · Severe · Immediate
Flood Warning issued April 13 at 9:43PM CDT until April 19 at 1:00AM CDT by NWS St Louis MO

...The Flood Warning is extended for the following rivers in Missouri...Illinois... Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Winfield....

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions...

Effective: 2026-04-13T21:43:00-05:00  ·  Expires: 2026-04-15T09:45:00-05:00

Today's Hourly Forecast

24-hour breakdown for Union, Missouri

12 AM
Clear
22°
Clear
💧 70% 💨 23 km/h
1 AM
Clear
22°
Clear
💧 72% 💨 21.6 km/h
2 AM
Clear
22°
Clear
💧 76% 💨 21.2 km/h
3 AM
Partly Cloudy
21°
Partly Cloudy
💧 80% 💨 21.6 km/h
4 AM
Clear
21°
Clear
💧 82% 💨 22.3 km/h
5 AM
Clear
20°
Clear
💧 87% 💨 24.8 km/h
6 AM
Clear
20°
Clear
💧 89% 💨 24.1 km/h
7 AM
Sunny
21°
Sunny
💧 88% 💨 24.1 km/h
8 AM
Sunny
22°
Sunny
💧 79% 💨 23.4 km/h
9 AM
Sunny
24°
Sunny
💧 69% 💨 22.7 km/h
10 AM
Sunny
27°
Sunny
💧 68% 💨 24.8 km/h
11 AM
Sunny
29°
Sunny
💧 62% 💨 27 km/h
12 PM
Sunny
30°
Sunny
💧 57% 💨 27 km/h
1 PM
Sunny
31°
Sunny
💧 56% 💨 26.3 km/h
2 PM
Sunny
32°
Sunny
💧 51% 💨 25.6 km/h
3 PM
Sunny
33°
Sunny
💧 48% 💨 24.5 km/h
4 PM
Sunny
33°
Sunny
💧 44% 💨 22.7 km/h
5 PM
Sunny
31°
Sunny
💧 43% 💨 22.3 km/h
6 PM
Thundery outbreaks in nearby
29°
Thundery outbreaks in nearby
💧 60% 💨 24.8 km/h
7 PM
Thundery outbreaks in nearby
28°
Thundery outbreaks in nearby
💧 68% 💨 23 km/h
8 PM
Thundery outbreaks in nearby
27°
Thundery outbreaks in nearby
💧 67% 💨 20.5 km/h
9 PM
Clear
26°
Clear
💧 69% 💨 20.5 km/h
10 PM
Clear
25°
Clear
💧 66% 💨 22.3 km/h
11 PM
Clear
24°
Clear
💧 72% 💨 24.8 km/h

3-Day Forecast

Daily overview for Union, Missouri

Today
Sunny
Sunny
33° / 19°
🌧️ 0% chance of rain
💧 Avg. humidity: 68%
💨 Max wind: 27 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 06:29 AM
🌇 Sunset: 07:40 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Moderate rain
Moderate rain
25° / 19°
🌧️ 82% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 26.3 km/h
🌧️ Total precip: 6.88 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:28 AM
🌇 Sunset: 07:41 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Patchy rain nearby
Patchy rain nearby
26° / 16°
🌧️ 67% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 2.75 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:26 AM
🌇 Sunset: 07:42 PM
🌙 Waning Crescent
🌑 Moon: 3% lit

Best Time to Visit Union

Plan your trip to Union, 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 Union 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Union?
Current conditions in Union: Sunny, temperature 24°C, humidity 69%.
What is the best time to visit Union?
The best time to visit Union is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Union?
Union is located at approximately 38.4° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Union?
The wettest period in Union is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Union?
For visits to Union during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Union in?
Union is located in United States, in the state of Missouri.
What are the public holidays in Union in 2026?
View the 2026 public holidays for Union on our Holidays page.
What are the GPS coordinates used for the weather forecast in Union?
The weather forecast for Union uses coordinates 38.4444, -91.0082.