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Union, MO

78°F
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Union

Missouri

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Union, MO Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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3 PM

81°
RealFeel® 83°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
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rain drop 63%
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Thunderstorms
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

RealFeel Shade™80°

Heat Index85°

WindS 12 mph

Air QualityPoor

Max UV Index2.5 (Moderate)

Wind Gusts16 mph

Humidity72%

Indoor Humidity72% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover89%

Rain0.04 in

Visibility10 mi

Cloud Ceiling7100 ft

4 PM

85°
RealFeel® 90°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 49%
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Intermittent clouds
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

RealFeel Shade™87°

Heat Index90°

WindS 12 mph

Air QualityPoor

Max UV Index2.5 (Moderate)

Wind Gusts16 mph

Humidity66%

Indoor Humidity66% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling7100 ft

5 PM

83°
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 70%
Chevron down
Mostly cloudy w/ t-storms
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

RealFeel Shade™85°

Heat Index91°

WindSSW 12 mph

Air QualityPoor

Max UV Index1.2 (Low)

Wind Gusts15 mph

Humidity76%

Indoor Humidity76% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Rain0.16 in

Visibility4 mi

Cloud Ceiling2000 ft

6 PM

81°
RealFeel® 82°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 70%
Chevron down
Mostly cloudy w/ t-storms
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

RealFeel Shade™82°

Heat Index86°

WindW 10 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts14 mph

Humidity75%

Indoor Humidity75% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Rain0.16 in

Visibility4 mi

Cloud Ceiling2000 ft

7 PM

79°
RealFeel® 84°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 49%
Chevron down
Intermittent clouds
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

RealFeel Shade™84°

Heat Index80°

WindWNW 9 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts13 mph

Humidity81%

Indoor Humidity81% (Extremely Humid)

Dew Point73° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling4800 ft

8 PM

78°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 78%
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Thunderstorms
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

RealFeel Shade™76°

WindSW 10 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts13 mph

Humidity81%

Indoor Humidity81% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Rain0.10 in

Visibility4 mi

Cloud Ceiling2000 ft

9 PM

77°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 79%
Chevron down
Thunderstorms
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

WindWSW 9 mph

Air QualityFair

Wind Gusts9 mph

Humidity82%

Indoor Humidity82% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover92%

Rain0.10 in

Visibility4 mi

Cloud Ceiling2000 ft

10 PM

74°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

WindW 8 mph

Air QualityFair

Wind Gusts8 mph

Humidity87%

Indoor Humidity87% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling1400 ft

11 PM

72°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy
alerts

Flood Watch

7:00 AM Sunday - 1:00 AM Monday

WindWNW 8 mph

Air QualityFair

Wind Gusts9 mph

Humidity89%

Indoor Humidity89% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling1000 ft

Hourly Weather Forecast for Union

AccuWeather's hourly forecast for Union provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 81° with a RealFeel® of 83°, thunderstorms with a 63% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Weather Near Union:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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