ST ELMO, IL 62458 Weather Forecast & Current Conditions

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EFFINGHAM CNTY MEM, IL
Current Weather

12:15 AM CST DEC 14, 2025
Clear
7°F
Feels Like: -10°F
Dewpoint: 1°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: WNW at 15 mph
Pressure: 30.48 inches
Last 72 hours

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ST ELMO, IL 62458
Weather Forecast

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OVERNIGHT
Partly cloudy late this evening, then clearing. Much colder with lows around 2 below. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 19 below.
SUNDAY
Sunny. Much cooler with highs around 8 above. Northwest winds 10 to 15 mph. Wind chill values as low as 21 below.
SUNDAY NIGHT
Mostly clear. Cold with lows around zero. Temperature rising to around 6 above after midnight. East winds around 5 mph, becoming south with gusts up to 20 mph after midnight. Wind chill values as low as 12 below.
MONDAY
Sunny. Not as cool with highs in the lower 30s. Southwest winds 10 to 15 mph. Wind chill values as low as 7 below in the morning.
MONDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Not as cool with lows around 20. Southwest winds around 5 mph.
TUESDAY
Sunny. Not as cool with highs in the mid 40s.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the lower 30s.
WEDNESDAY
Mostly sunny. Highs in the upper 40s.
WEDNESDAY NIGHT
Mostly cloudy. A chance of rain after midnight. Lows in the upper 30s. Temperature rising into the upper 40s after midnight. Chance of rain 40 percent.
THURSDAY
Mostly cloudy with a chance of rain in the morning, then mostly sunny with a slight chance of rain in the afternoon. Highs in the mid 50s. Temperature falling into the mid 40s in the afternoon. Chance of rain 50 percent.
THURSDAY NIGHT AND FRIDAY
Partly cloudy. Lows in the lower 20s. Highs in the upper 30s.
FRIDAY NIGHT AND SATURDAY
Mostly cloudy. A 20 percent chance of rain. Lows around 30. Highs in the lower 50s.

Visible Weather Satellite
ST ELMO, IL 62458
Infrared Weather Satellite
ST ELMO, IL 62458
NEXRAD Weather Radar
ST ELMO, IL 62458

EFFINGHAM CNTY MEM, IL 3 hourly weather forecast

weather forecast created  6:00 PM CST 12/13/2025
Sunday
14 DEC 2025
ST ELMO, IL 62458 weather forecast Day 1, 0 hours 12 AM -7° Partly Cloudy 1%

0% Thunder
( 0% severe)
NW   9 77%
Low 0° ST ELMO, IL 62458 weather forecast Day 1, 3 hours 3 AM -11° Partly Cloudy NW   10 76% -1°
High 7° ST ELMO, IL 62458 weather forecast Day 1, 6 hours 6 AM -15° Partly Cloudy 0%

0% Thunder
( 0% severe)
NW   10 76% -4°

Partly Cloudy



ST ELMO, IL 62458 weather forecast Day 1, 9 hours 9 AM -14° Partly Cloudy NNW   10 68% -5°
ST ELMO, IL 62458 weather forecast Day 1, 12 hours 12 PM -8° Clear 0%

0% Thunder
( 0% severe)
NNW   8 62% -4°
ST ELMO, IL 62458 weather forecast Day 1, 15 hours 3 PM -5° Clear NW   7 62% -2°
ST ELMO, IL 62458 weather forecast Day 1, 18 hours 6 PM -5° Clear 0%

0% Thunder
( 0% severe)
NW   1 81% -2°
ST ELMO, IL 62458 weather forecast Day 1, 21 hours 9 PM -6° Clear   CALM 85% -2°
Monday
15 DEC 2025
ST ELMO, IL 62458 weather forecast Day 2, 0 hours 12 AM -6° Clear 0%

0% Thunder
( 0% severe)
  CALM 85% -2°
Low -1° ST ELMO, IL 62458 weather forecast Day 2, 3 hours 3 AM -6° Clear S   3 85% -1°
High 31° ST ELMO, IL 62458 weather forecast Day 2, 6 hours 6 AM -8° Partly Cloudy 1%

0% Thunder
( 0% severe)
S   8 76%

Partly Cloudy



ST ELMO, IL 62458 weather forecast Day 2, 9 hours 9 AM 14° Partly Cloudy S   12 60%
ST ELMO, IL 62458 weather forecast Day 2, 12 hours 12 PM 25° 14° Partly Cloudy 1%

0% Thunder
( 0% severe)
SSW   12 46%
ST ELMO, IL 62458 weather forecast Day 2, 15 hours 3 PM 30° 22° Partly Cloudy SSW   9 45% 13°
ST ELMO, IL 62458 weather forecast Day 2, 18 hours 6 PM 24° 17° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSW   6 62% 14°
ST ELMO, IL 62458 weather forecast Day 2, 21 hours 9 PM 24° 18° Partly Cloudy SSW   5 65% 15°

EFFINGHAM CNTY MEM, IL extended weather forecast

Tuesday
16 DEC 2025
Wednesday
17 DEC 2025
Thursday
18 DEC 2025
Friday
19 DEC 2025
Saturday
20 DEC 2025
Low 13° Low 29° Low 43° Low 21° Low 29°
High 46° High 48° High 50° High 35° High 50°
ST ELMO, IL 62458 weather forecast Day 3 ST ELMO, IL 62458 weather forecast Day 4 ST ELMO, IL 62458 weather forecast Day 5 ST ELMO, IL 62458 weather forecast Day 6 ST ELMO, IL 62458 weather forecast Day 7
Clear
3% Rain/Ice
Partly Cloudy
10% Rain
Overcast
78% Rain
Clear
12% Rain/Snow
Mostly Cloudy
20% Rain/Snow
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