Big Mound, IL Weather Forecast & Current Conditions

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Big Mound Weather Map
UTC Time: 9/16/2026, 20:50
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Big Mound, IL Regional Weather

Expires:202609162100;;564040
ASUS43 KLOT 162010
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 PM CDT WED SEP 16 2026

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.

* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
  REPORT WEATHER SUCH AS PRECIPITATION OR FOG.


ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-162100-
SOUTH-CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     MOSUNNY   95  70  43 SW5G17    30.22S HX 101  TC  35   
EFFINGHAM*     PTSUNNY   92  70  48 W5        30.24F HX  97  TC  33   
MT. VERNON     SUNNY     96  72  45 SW14      30.22F HX 104  TC  36   
SALEM*         PTSUNNY   99  71  40 MISG      30.21F HX 108  TC  37   
METROPOLIS*    SUNNY     96  68  39 SW5       30.24F HX 100  TC  36   
$$


SKY/WX - Weather  TMP - Temperature  DP - Dew Point  RH - Humidity
WIND - Wind Direction/Speed PRES - Barometric Pressure VSB - Visibility
WCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph

Big Mound, IL

Afternoon
Thunderstorms
98°/ 72° 37°/ 22°
30%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 70° 35°/ 21°
0%
Sat Night
Cloudy
70°21°
0%
Sun Night
Cloudy
70°21°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny with a chance of showers with a slight chance of thunderstorms. Hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph. Chance of rain 30 percent.

Night: Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 70s. South winds around 5 mph. Chance of rain 30 percent.

Carmi, IL

Afternoon
Rain Showers
98°/ 75° 37°/ 24°
20%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
88°31°
0%

Day: Sunny with a 20 percent chance of showers. Hot. Near steady temperature in the upper 90s. Southwest winds 5 to 10 mph.

Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable.

McLeansboro, IL

Afternoon
Thunderstorms
98°/ 75° 37°/ 24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

Night: Mostly clear. Lows in the mid 70s. South winds around 5 mph.

Albion, IL

Afternoon
Thunderstorms
98°/ 75° 37°/ 24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Mostly sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 20 percent.

Mount Vernon, IL

Afternoon
Thunderstorms
95°/ 75° 35°/ 24°
30%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
70°21°
0%
Sun Night
Cloudy
70°21°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny with a chance of showers with a slight chance of thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent. Highest heat index readings heat index readings up to 105.

Night: Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 30 percent.

Mount Carmel, IL

Afternoon
Thunderstorms
98°/ 75° 37°/ 24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Mostly sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph. Chance of rain 20 percent.

Night: Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 20 percent.

Poseyville, IN

Afternoon
Sunny
98°/ 75° 37°/ 24°
0%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 68° 33°/ 20°
30%
Tuesday
Sunny
88°31°
0%

Day: Sunny, hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph.

Night: Mostly clear. Lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable.

West Frankfort, IL

Afternoon
Thunderstorms
98°/ 75° 37°/ 24°
20%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
98°/ 72° 37°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny with a slight chance of showers and thunderstorms. Hot. Near steady temperature in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

Night: Mostly clear. Lows in the mid 70s. South winds around 5 mph.

Shawneetown, IL

Afternoon
Sunny
98°/ 75° 37°/ 24°
0%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny, hot. Near steady temperature in the upper 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear. Lows in the mid 70s. South winds around 5 mph.

Harrisburg, IL

Afternoon
Sunny
95°/ 75° 35°/ 24°
0%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
98°/ 72° 37°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny, hot. Near steady temperature in the mid 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear. Lows in the mid 70s. South winds around 5 mph.

Fort Branch, IN

Afternoon
Rain Showers
98°/ 75° 37°/ 24°
20%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 68° 33°/ 20°
30%
Tuesday
Sunny
85°29°
0%

Day: Mostly sunny with a 20 percent chance of showers. Hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph.

Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. South winds around 5 mph.

Herrin, IL

Afternoon
Sunny
95°/ 75° 35°/ 24°
0%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
98°/ 72° 37°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny, hot. Near steady temperature in the mid 90s. Southwest winds 5 to 10 mph.

Night: Mostly clear. Lows in the mid 70s. South winds around 5 mph.

Vincennes, IN

Tonight
Thunderstorms
75°24°
20%
Thursday
Sunny
98°/ 72° 37°/ 22°
20%
Friday
Thunderstorms
92°/ 70° 33°/ 21°
20%
Saturday
Sunny
98°/ 72° 37°/ 22°
20%
Sunday
Thunderstorms
95°/ 68° 35°/ 20°
20%
Monday
Thunderstorms
90°/ 65° 32°/ 18°
30%
Tuesday
Rain Showers
85°/ 62° 29°/ 17°
20%
Wednesday
Rain Showers
82°28°
20%

Night: Partly cloudy with isolated showers and thunderstorms late this afternoon, then mostly clear. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of rain 20 percent.

Evansville, IN

Afternoon
Sunny
98°/ 75° 37°/ 24°
0%
Thursday
Sunny
100°/ 75° 38°/ 24°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 68° 33°/ 20°
30%
Tuesday
Sunny
88°31°
0%

Day: Sunny, hot. Near steady temperature in the upper 90s. Southwest winds around 5 mph.

Night: Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph in the evening, becoming light and variable.

Morganfield, KY

Afternoon
Sunny
95°/ 72° 35°/ 22°
0%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Tuesday
Cloudy
72°22°
0%
Monday
Cloudy
72°22°
0%
Mon Night
Rain Showers
68°20°
40%
Tuesday
Sunny
88°31°
0%

Day: Sunny, hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Pinckneyville, IL

Afternoon
Thunderstorms
95°/ 72° 35°/ 22°
50%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
70°21°
0%
Sun Night
Cloudy
70°21°
0%
Monday
Partly Cloudy
92°/ 65° 33°/ 18°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny with a chance of showers with a slight chance of thunderstorms. Hot. Near steady temperature in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Highest heat index readings heat index readings up to 106.

Night: Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 70s. South winds around 5 mph. Chance of rain 20 percent.

Boonville, IN

Afternoon
Sunny
95°/ 75° 35°/ 24°
0%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 68° 33°/ 20°
40%
Tuesday
Sunny
85°29°
0%

Day: Sunny, hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph.

Night: Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph in the evening, becoming light and variable.

Henderson, KY

Afternoon
Sunny
95°/ 75° 35°/ 24°
0%
Thursday
Sunny
98°/ 75° 37°/ 24°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Cloudy
72°22°
0%
Sun Night
Cloudy
72°22°
0%
Monday
Partly Cloudy
92°/ 68° 33°/ 20°
40%
Tuesday
Sunny
88°31°
0%

Day: Sunny, hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph.

Night: Mostly clear. Lows in the mid 70s. South winds around 5 mph.

Elizabethtown, IL

Afternoon
Sunny
95°/ 72° 35°/ 22°
0%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Clear
72°22°
0%
Sunday
Sunny
95°/ 70° 35°/ 21°
0%
Monday
Sunny
92°/ 68° 33°/ 20°
30%
Tuesday
Sunny
85°29°
0%

Day: Sunny, hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph.

Night: Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Golconda, IL

Afternoon
Sunny
95°/ 72° 35°/ 22°
0%
Thursday
Sunny
98°/ 72° 37°/ 22°
0%
Friday
Sunny
95°/ 72° 35°/ 22°
0%
Sat Night
Clear
72°22°
0%
Sunday
Sunny
95°/ 70° 35°/ 21°
0%
Monday
Sunny
92°/ 68° 33°/ 20°
30%
Tuesday
Sunny
88°31°
0%

Day: Sunny, hot. Near steady temperature in the mid 90s. Southwest winds around 5 mph.

Night: Mostly clear. Lows in the lower 70s. Calm winds.

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