McCarthy Lake, IL Weather Forecast & Current Conditions

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McCarthy Lake, IL Weather Maps

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Mccarthy Lake Weather Map
UTC Time: 10/15/2026, 08:27
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

McCarthy Lake, IL Regional Weather

Expires:202610150900;;128344
ASUS43 KLOT 150812
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 AM CDT THU OCT 15 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.


ILZ067-068-072-073-078-083-087-091-150900-
SOUTHEAST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LAWRENCEVILLE  CLOUDY    70  69  97 NE6       30.08R TC  21           
FLORA*         PTCLDY    70 N/A N/A CALM      30.08S TC  21           
FAIRFIELD*     CLOUDY    69  69  99 CALM      30.08R FOG     TC  21   
HARRISBURG*    CLOUDY    69  69 100 CALM      30.07S FOG     TC  21   
ROBINSON*      CLOUDY    68  68 100 NE3       30.08S FOG     TC  20   
$$

ABBREVIATIONS USED IN REMARKS
   TC - TEMPERATURE IN CELSIUS
  WCI - WIND CHILL INDEX
   HX - HEAT INDEX
  VSB - VISIBILITY
$$

  

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

McCarthy Lake, IL

Tonight
Mostly Cloudy
68°20°
0%
Thursday
Thunderstorms
82°/ 52° 28°/ 11°
70%
Friday
Rain Showers
58°/ 42° 14°/ 6°
30%
Saturday
Sunny
60°/ 35° 16°/ 2°
0%
Sun Night
Clear
38°3°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy. Patchy fog. Near steady temperature in the upper 60s. Northeast winds around 5 mph.

Flora, IL

Tonight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
82°/ 50° 28°/ 10°
70%
Friday
Partly Cloudy
58°/ 40° 14°/ 4°
0%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sun Night
Clear
38°3°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Near steady temperature in the upper 60s. Northeast winds around 5 mph. Chance of rain 20 percent.

Newton, IL

Tonight
Mostly Cloudy
68°20°
0%
Thursday
Thunderstorms
82°/ 52° 28°/ 11°
70%
Friday
Mostly Cloudy
58°/ 40° 14°/ 4°
0%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sun Night
Clear
38°3°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy. Near steady temperature in the upper 60s. Northeast winds around 5 mph.

Fairfield, IL

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
85°/ 52° 29°/ 11°
70%
Friday
Mostly Cloudy
58°/ 40° 14°/ 4°
0%
Saturday
Sunny
60°/ 35° 16°/ 2°
0%
Sun Night
Clear
38°3°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Patchy dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Lawrenceville, IL

Tonight
Mostly Cloudy
68°20°
0%
Thursday
Thunderstorms
82°/ 52° 28°/ 11°
70%
Friday
Rain Showers
58°/ 42° 14°/ 6°
40%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sun Night-Mon
Clear
38°3°
0%
Mon Night-Tue
Cloudy
42°6°
0%
Tue Night-Wed
Clear
45°7°
0%

Night: Mostly cloudy. Patchy fog. Near steady temperature in the upper 60s. Northeast winds around 5 mph.

Albion, IL

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
85°/ 52° 29°/ 11°
70%
Friday
Rain Showers
58°/ 42° 14°/ 6°
40%
Sat-Sat Night
Clear
58°14°
0%
Sunday
Sunny
65°/ 40° 18°/ 4°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Patchy dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Mount Carmel, IL

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
85°/ 52° 29°/ 11°
70%
Friday
Rain Showers
58°/ 42° 14°/ 6°
50%
Sat-Sat Night
Clear
58°14°
0%
Sun-Sun Night
Clear
65°18°
0%
Monday
Sunny
70°/ 45° 21°/ 7°
0%
Tue Night-Wed
Clear
45°7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Patchy dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Robinson, IL

Tonight
Mostly Cloudy
68°20°
0%
Thursday
Thunderstorms
82°/ 52° 28°/ 11°
70%
Friday
Rain Showers
58°/ 40° 14°/ 4°
40%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sun Night-Mon
Clear
38°3°
0%
Mon Night-Tue
Cloudy
42°6°
0%
Tue Night-Wed
Clear
45°7°
0%

Night: Mostly cloudy. Near steady temperature in the upper 60s. Northeast winds around 5 mph.

Effingham, IL

Tonight
Mostly Cloudy
65°18°
0%
Thursday
Thunderstorms
80°/ 48° 27°/ 9°
70%
Friday
Partly Cloudy
58°/ 38° 14°/ 3°
0%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sunday
Sunny
65°/ 38° 18°/ 3°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy. Near steady temperature in the mid 60s. Northeast winds around 5 mph.

Greenup, IL

Tonight
Mostly Cloudy
65°18°
0%
Thursday
Thunderstorms
78°/ 48° 26°/ 9°
70%
Friday
Mostly Cloudy
58°/ 38° 14°/ 3°
0%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sunday
Sunny
65°/ 38° 18°/ 3°
0%
Mon-Mon Night
Cloudy
72°22°
0%
Tuesday
Clear
75°24°
0%
Wednesday
Clear
75°24°
0%

Night: Mostly cloudy. Near steady temperature in the mid 60s. Northeast winds around 5 mph.

Centralia, IL

Tonight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
85°/ 48° 29°/ 9°
70%
Friday
Partly Cloudy
58°/ 38° 14°/ 3°
0%
Saturday
Sunny
60°/ 35° 16°/ 2°
0%
Sun Night
Clear
38°3°
0%
Mon-Mon Night
Cloudy
72°22°
0%
Tuesday
Clear
75°24°
0%
Wednesday
Clear
75°24°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Near steady temperature in the upper 60s. East winds around 5 mph. Chance of rain 20 percent.

Litchfield, IL

Tonight
Rain Showers
68°20°
20%
Thursday
Thunderstorms
78°/ 45° 26°/ 7°
90%
Friday
Rain Showers
55°/ 35° 13°/ 2°
20%
Saturday
Sunny
60°/ 35° 16°/ 2°
0%
Sun Night
Clear
38°3°
0%
Monday
Cloudy
75°24°
0%
Tuesday
Cloudy
75°/ 42° 24°/ 6°
0%

Night: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the upper 60s. East winds around 5 mph.

Carmi, IL

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
88°/ 52° 31°/ 11°
70%
Friday
Rain Showers
58°/ 42° 14°/ 6°
30%
Saturday
Sunny
60°/ 35° 16°/ 2°
0%
Sun Night-Mon
Clear
40°4°
0%
Mon Night-Tue
Cloudy
45°7°
0%
Tue Night-Wed
Clear
45°7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Patchy dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Mount Vernon, IL

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
85°/ 48° 29°/ 9°
70%
Friday
Partly Cloudy
58°/ 38° 14°/ 3°
0%
Saturday
Sunny
62°/ 35° 17°/ 2°
0%
Sun Night
Clear
38°3°
0%
Mon-Mon Night
Cloudy
72°22°
0%
Tuesday
Clear
75°24°
0%
Wednesday
Clear
75°24°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Areas of dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Marshall, IL

Tonight
Mostly Cloudy
65°18°
0%
Thursday
Thunderstorms
80°/ 50° 27°/ 10°
70%
Friday
Rain Showers
58°/ 38° 14°/ 3°
30%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sunday
Sunny
65°/ 38° 18°/ 3°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy. Near steady temperature in the mid 60s. Northeast winds around 5 mph.

McLeansboro, IL

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
88°/ 52° 31°/ 11°
70%
Friday
Rain Showers
58°/ 42° 14°/ 6°
30%
Saturday
Sunny
60°/ 35° 16°/ 2°
0%
Sun Night-Mon
Clear
38°3°
0%
Mon Night-Tue
Cloudy
45°7°
0%
Tue Night-Wed
Clear
45°7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Areas of dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Shelbyville, IL

Tonight
Rain Showers
65°18°
20%
Thursday
Thunderstorms
78°/ 45° 26°/ 7°
70%
Friday
Rain Showers
55°/ 35° 13°/ 2°
40%
Sat-Sat Night
Clear
58°14°
0%
Sunday
Sunny
68°/ 38° 20°/ 3°
0%
Mon-Mon Night
Cloudy
72°22°
0%
Tuesday
Clear
75°24°
0%
Wednesday
Clear
75°24°
0%

Night: Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the mid 60s. East winds around 5 mph.

Fort Branch, IN

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
85°/ 55° 29°/ 13°
70%
Friday
Rain Showers
58°/ 42° 14°/ 6°
50%
Sat-Sat Night
Clear
58°14°
0%
Sun-Sun Night
Clear
65°18°
0%
Monday
Sunny
68°/ 45° 20°/ 7°
0%
Tue Night-Wed
Clear
45°7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Patchy dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Poseyville, IN

Overnight
Thunderstorms
68°20°
20%
Thursday
Thunderstorms
88°/ 52° 31°/ 11°
70%
Friday
Mostly Cloudy
58°/ 42° 14°/ 6°
0%
Sat-Sat Night
Clear
60°16°
0%
Sunday
Sunny
65°18°
0%
Sun Night-Mon
Clear
42°6°
0%
Mon Night-Tue
Cloudy
45°7°
0%
Tue Night-Wed
Clear
45°7°
0%

Night: Mostly cloudy with a slight chance of showers and thunderstorms. Areas of dense fog. Near steady temperature in the upper 60s. Calm winds. Chance of rain 20 percent.

Charleston, IL

Tonight
Mostly Cloudy
65°18°
0%
Thursday
Thunderstorms
78°/ 48° 26°/ 9°
70%
Friday
Rain Showers
55°/ 38° 13°/ 3°
30%
Saturday
Sunny
58°/ 35° 14°/ 2°
0%
Sunday
Sunny
68°/ 38° 20°/ 3°
0%
Monday
Cloudy
72°22°
0%
Tuesday
Cloudy
72°/ 45° 22°/ 7°
0%

Night: Mostly cloudy. Near steady temperature in the mid 60s. Northeast winds around 5 mph.

Names listed above may include county names.

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