UNION, MO 63084 Weather Forecast & Current Conditions

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SPIRIT OF ST. LOUIS, MO
Current Weather

2:54 PM CDT MAY 12, 2026
Clear
81°F
Feels Like: 80°F
Dewpoint: 52°F
Rel. Hum.: 37%
Visibility: 10 miles
Wind: SSW at 13 mph, gusts to 24
Pressure: 30.00 inches
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UNION, MO 63084
Weather Forecast

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THIS AFTERNOON
Sunny. Near steady temperature around 80. Southwest winds 10 to 15 mph with gusts up to 25 mph.
TONIGHT
Partly cloudy. Lows in the mid 50s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west after midnight.
WEDNESDAY
Sunny. Highs in the mid 70s. Northwest winds 5 to 10 mph with gusts up to 20 mph.
WEDNESDAY NIGHT
Clear. Lows in the upper 40s. North winds 5 to 10 mph with gusts up to 20 mph in the evening, becoming light and variable.
THURSDAY
Sunny. Highs in the upper 70s. Southeast winds around 5 mph.
THURSDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Not as cool with lows in the upper 50s. Chance of rain 50 percent.
FRIDAY AND FRIDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 90s. Lows in the mid 60s. Chance of rain 20 percent.
SATURDAY
Partly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 50 percent.
SATURDAY NIGHT
Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent.
SUNDAY
Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the upper 80s. Chance of rain 30 percent.
SUNDAY NIGHT
Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent.
MONDAY
Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs around 90. Chance of rain 60 percent.

Visible Weather Satellite
UNION, MO 63084
Infrared Weather Satellite
UNION, MO 63084
NEXRAD Weather Radar
UNION, MO 63084

SPIRIT OF ST. LOUIS, MO 3 hourly weather forecast

weather forecast created  6:00 AM MDT  5/12/2026
Tuesday
12 MAY 2026
UNION, MO 63084 weather forecast Day 1, 12 hours 1 PM 80° 79° Clear 2%

0% Thunder
( 3% severe)
SW   12 31% 47°
High 84° UNION, MO 63084 weather forecast Day 1, 15 hours 4 PM 83° 81° Clear SW   13 27% 46°
Partly Cloudy



UNION, MO 63084 weather forecast Day 1, 18 hours 7 PM 79° 79° Partly Cloudy 19%
RAIN
<.01 in
0% Thunder
( 15% severe)
SW   9 35% 49°
UNION, MO 63084 weather forecast Day 1, 21 hours 10 PM 69° 69° Partly Cloudy SW   8 53% 51°
Wednesday
13 MAY 2026
UNION, MO 63084 weather forecast Day 2, 0 hours 1 AM 66° 66° Mostly Cloudy 8%

0% Thunder
( 6% severe)
WSW   8 63% 53°
Low 57° UNION, MO 63084 weather forecast Day 2, 3 hours 4 AM 60° 59° Clear NW   7 62% 47°
High 75° UNION, MO 63084 weather forecast Day 2, 6 hours 7 AM 57° 56° Clear 0%

0% Thunder
( 1% severe)
WNW   7 59% 43°

Clear



UNION, MO 63084 weather forecast Day 2, 9 hours 10 AM 67° 67° Clear NNW   12 40% 42°
UNION, MO 63084 weather forecast Day 2, 12 hours 1 PM 72° 72° Clear 0%

0% Thunder
( 1% severe)
NNW   14 33% 41°
UNION, MO 63084 weather forecast Day 2, 15 hours 4 PM 75° 75° Clear NNW   14 28% 40°
UNION, MO 63084 weather forecast Day 2, 18 hours 7 PM 72° 72° Clear 0%

0% Thunder
( 1% severe)
N   8 31% 40°
UNION, MO 63084 weather forecast Day 2, 21 hours 10 PM 61° 62° Clear   CALM 48% 41°
Thursday
14 MAY 2026
UNION, MO 63084 weather forecast Day 3, 0 hours 1 AM 56° 56° Clear 0%

0% Thunder
( 1% severe)
  CALM 57% 41°
Low 48° UNION, MO 63084 weather forecast Day 3, 3 hours 4 AM 51° 51° Clear   CALM 66% 40°
High 76° UNION, MO 63084 weather forecast Day 3, 6 hours 7 AM 51° 51° Clear 0%

0% Thunder
( 1% severe)
  CALM 68% 41°

Partly Cloudy



UNION, MO 63084 weather forecast Day 3, 9 hours 10 AM 65° 65° Clear SE   1 43% 42°
UNION, MO 63084 weather forecast Day 3, 15 hours 1 PM 73° 73° Partly Cloudy 0%

0% Thunder
( 7% severe)
SE   6 33% 42°
UNION, MO 63084 weather forecast Day 3, 18 hours 4 PM 76° 77° Partly Cloudy SSE   9 30% 42°
UNION, MO 63084 weather forecast Day 3, 21 hours 7 PM 74° 74° Mostly Cloudy     SE   10 33% 43°

SPIRIT OF ST. LOUIS, MO extended weather forecast

Friday
15 MAY 2026
Saturday
16 MAY 2026
Sunday
17 MAY 2026
Monday
18 MAY 2026
Tuesday
19 MAY 2026
Low 57° Low 64° Low 63° Low 67° Low 61°
High 87° High 83° High 86° High 81° High 78°
UNION, MO 63084 weather forecast Day 4 UNION, MO 63084 weather forecast Day 5 UNION, MO 63084 weather forecast Day 6 UNION, MO 63084 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
30% Rain
Overcast
54% Rain
Partly Cloudy
25% Rain
Overcast
61% Rain
Overcast
61% Rain
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