UNION, MO 63084 Weather Forecast & Current Conditions

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SPIRIT OF ST. LOUIS, MO
Current Weather

11:54 PM CST DEC 13, 2025
Clear
9°F
Feels Like: -4°F
Dewpoint: 1°F
Rel. Hum.: 65%
Visibility: 10 miles
Wind: NW at 9 mph
Pressure: 30.55 inches
Last 72 hours

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UNION, MO 63084
Weather Forecast

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Snow Depth pages
OVERNIGHT
Mostly cloudy late this evening, then clearing. Much cooler with lows around 6 above. North winds 5 to 10 mph with gusts up to 20 mph. Wind chill values as low as 7 below.
SUNDAY
Sunny, cooler with highs around 19. North winds 5 to 10 mph. Wind chill values as low as 9 below in the morning.
SUNDAY NIGHT
Clear. Lows around 11. Southeast winds around 5 mph, becoming south with gusts up to 20 mph after midnight. Wind chill values as low as 1 above.
MONDAY
Sunny. Not as cool with highs in the lower 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 4 above in the morning.
MONDAY NIGHT
Mostly clear. Not as cool with lows in the upper 20s. Southwest winds around 5 mph.
TUESDAY
Sunny. Not as cool with highs in the mid 50s.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the upper 30s.
WEDNESDAY
Mostly sunny. Highs in the upper 50s.
WEDNESDAY NIGHT
Mostly cloudy. A chance of rain after midnight. Lows in the mid 40s. Temperature rising into the lower 50s after midnight. Chance of rain 30 percent.
THURSDAY
Mostly sunny. A chance of rain in the morning. Highs in the upper 50s. Temperature falling into the upper 40s in the afternoon. Chance of rain 40 percent.
THURSDAY NIGHT AND FRIDAY
Partly cloudy. Lows in the mid 20s. Highs in the mid 40s.
FRIDAY NIGHT
Mostly cloudy. Not as cool with lows in the mid 30s. Temperature rising into the lower 40s after midnight.
SATURDAY
Partly sunny. A slight chance of rain in the morning. Not as cool with highs in the upper 50s. Chance of rain 20 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  5:00 PM MST 12/13/2025
Sunday
14 DEC 2025
UNION, MO 63084 weather forecast Day 1, 0 hours 12 AM 10° -3° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNW   9 62%
Low 5° UNION, MO 63084 weather forecast Day 1, 3 hours 3 AM -6° Clear NNW   10 59% -2°
High 17° UNION, MO 63084 weather forecast Day 1, 6 hours 6 AM -9° Clear 0%

0% Thunder
( 0% severe)
NNW   10 58% -4°

Clear



UNION, MO 63084 weather forecast Day 1, 9 hours 9 AM -7° Clear NNW   9 52% -5°
UNION, MO 63084 weather forecast Day 1, 12 hours 12 PM 12° Clear 0%

0% Thunder
( 0% severe)
NNW   8 38% -6°
UNION, MO 63084 weather forecast Day 1, 15 hours 3 PM 16° Clear NNW   6 31% -6°
UNION, MO 63084 weather forecast Day 1, 18 hours 6 PM 12° Clear 0%

0% Thunder
( 0% severe)
NE   1 43% -4°
UNION, MO 63084 weather forecast Day 1, 21 hours 9 PM Clear SE   1 53% -3°
Monday
15 DEC 2025
UNION, MO 63084 weather forecast Day 2, 0 hours 12 AM Clear 0%

0% Thunder
( 0% severe)
S   3 53% -3°
Low 8° UNION, MO 63084 weather forecast Day 2, 3 hours 3 AM 10° Clear S   6 50% -3°
High 44° UNION, MO 63084 weather forecast Day 2, 6 hours 6 AM 13° Clear 0%

0% Thunder
( 0% severe)
S   8 45% -2°

Clear



UNION, MO 63084 weather forecast Day 2, 9 hours 9 AM 23° 12° Clear SSW   10 33%
UNION, MO 63084 weather forecast Day 2, 12 hours 12 PM 37° 29° Clear 0%

0% Thunder
( 0% severe)
SW   13 21%
UNION, MO 63084 weather forecast Day 2, 15 hours 3 PM 43° 37° Clear SW   10 24% 11°
UNION, MO 63084 weather forecast Day 2, 18 hours 6 PM 34° 30° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   5 45% 16°
UNION, MO 63084 weather forecast Day 2, 21 hours 9 PM 30° 26° Partly Cloudy SW   3 58% 18°

SPIRIT OF ST. LOUIS, MO extended weather forecast

Tuesday
16 DEC 2025
Wednesday
17 DEC 2025
Thursday
18 DEC 2025
Friday
19 DEC 2025
Saturday
20 DEC 2025
Low 21° Low 33° Low 42° Low 22° Low 36°
High 55° High 54° High 56° High 39° High 54°
UNION, MO 63084 weather forecast Day 3 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
Clear
3% Rain/Ice
Partly Cloudy
9% Rain
Overcast
74% Rain
Clear
9% Snow
Mostly Cloudy
22% Rain/Ice
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