Weather Alert
Somerset Weather Warning NWS WEATHER ALERT FOR THE SOMERSET, IL AREA - Issued: 1218 AM CDT Wed Oct 21 2026 Somerset Weather Warning

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Somerset, IL Weather Forecast & Current Conditions

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Somerset, IL Weather Maps

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Somerset Weather Map
UTC Time: 10/21/2026, 11:04
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Somerset, IL Regional Weather

Expires:202610211200;;935701
ASUS43 KLOT 211103
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 AM CDT WED OCT 21 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>094-211200-
SOUTH-CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
CARBONDALE     PTCLDY    43  42  97 CALM      30.27R FOG     TC   6   
CAIRO*         PTCLDY    46  46  99 CALM      30.26R TC   8           
EFFINGHAM*     CLEAR     42  40  94 CALM      30.30R TC   6           
MT. VERNON     CLEAR     40  40 100 CALM      30.28R TC   4           
CENTRALIA*     CLEAR     42  41  97 CALM      30.28R FOG     TC   6   
SALEM*         CLEAR     44  43  97 MISG      30.28R TC   7           
METROPOLIS*    PTCLDY    43  42  98 CALM      30.27R TC   6           
$$


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

Somerset, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
75°/ 42° 24°/ 6°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Golconda, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
72°22°
0%
Saturday
Sunny
75°24°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

Shawneetown, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 45° 22°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
72°/ 45° 22°/ 7°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
70°21°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Elizabethtown, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 45° 22°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
72°22°
0%
Saturday
Sunny
75°24°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
70°21°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

Herrin, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
75°/ 45° 24°/ 7°
0%
Sat Night-Sun
Cloudy
48°9°
0%
Sun Night
Mostly Cloudy
48°9°
0%
Wednesday
Mostly Cloudy
48°9°
0%
Tuesday
Mostly Cloudy
48°9°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Vienna, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
75°/ 45° 24°/ 7°
0%
Sat Night-Sun
Cloudy
45°7°
0%
Sun Night
Mostly Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

Smithland, KY

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
72°22°
0%
Saturday
Sunny
75°24°
0%
Sat Night
Cloudy
45°7°
0%
Tuesday
Cloudy
45°7°
0%
Monday
Cloudy
45°7°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

Carmi, IL

Overnight
Clear
42°6°
0%
Wednesday
Sunny
72°/ 45° 22°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
72°/ 45° 22°/ 7°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
50°10°
0%
Tuesday
Sunny
70°21°
0%

Night: Clear. Lows in the lower 40s. Calm winds.

Marion, KY

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 45° 22°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
72°22°
0%
Saturday
Sunny
75°24°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
70°21°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

McLeansboro, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
72°/ 45° 22°/ 7°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
70°21°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Morganfield, KY

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 45° 22°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
72°/ 45° 22°/ 7°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
70°21°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

West Frankfort, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
75°/ 45° 24°/ 7°
0%
Sat Night
Cloudy
48°9°
0%
Sun Night
Cloudy
48°9°
0%
Mon-Mon Night
Mostly Cloudy
75°24°
0%
Tuesday
Partly Cloudy
72°22°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Metropolis, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
75°24°
0%
Saturday
Sunny
75°24°
0%
Sat Night
Cloudy
45°7°
0%
Tuesday
Cloudy
45°7°
0%
Monday
Cloudy
45°7°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

Dixon, KY

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 45° 22°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
72°22°
0%
Saturday
Sunny
75°24°
0%
Sat Night
Cloudy
45°7°
0%
Tuesday
Cloudy
45°7°
0%
Monday
Cloudy
45°7°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Poseyville, IN

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 48° 22°/ 9°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
72°/ 45° 22°/ 7°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
50°10°
0%
Tuesday
Sunny
70°21°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Mound City, IL

Overnight
Clear
45°7°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
75°/ 45° 24°/ 7°
0%
Sat Night
Cloudy
45°7°
0%
Sun Night
Cloudy
45°7°
0%
Mon-Mon Night
Mostly Cloudy
75°24°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

Princeton, KY

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 45° 22°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
72°22°
0%
Saturday
Sunny
75°24°
0%
Sat Night
Cloudy
45°7°
0%
Tuesday
Cloudy
45°7°
0%
Monday
Cloudy
45°7°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Near steady temperature in the mid 40s. Calm winds.

Henderson, KY

Overnight
Clear
45°7°
0%
Wednesday
Sunny
72°/ 48° 22°/ 9°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Fri-Fri Night
Clear
72°22°
0%
Saturday
Sunny
72°22°
0%
Sat Night
Cloudy
48°9°
0%
Tuesday
Cloudy
48°9°
0%
Monday
Cloudy
48°9°
0%
Mon Night-Tue
Mostly Cloudy
48°9°
0%

Night: Clear. Patchy fog. Near steady temperature in the mid 40s. Calm winds.

Carbondale, IL

Overnight
Clear
48°9°
0%
Wednesday
Sunny
75°/ 45° 24°/ 7°
0%
Thursday
Sunny
75°/ 45° 24°/ 7°
0%
Friday
Sunny
75°/ 45° 24°/ 7°
0%
Sat Night-Sun
Cloudy
48°9°
0%
Sun Night
Mostly Cloudy
48°9°
0%
Wednesday
Mostly Cloudy
48°9°
0%
Tuesday
Mostly Cloudy
48°9°
0%

Night: Mostly clear. Patchy fog. Near steady temperature in the upper 40s. Calm winds.

Jonesboro, IL

Overnight
Clear
48°9°
0%
Wednesday
Sunny
75°/ 48° 24°/ 9°
0%
Thursday
Sunny
75°/ 48° 24°/ 9°
0%
Friday
Sunny
75°/ 45° 24°/ 7°
0%
Sat Night-Sun
Cloudy
48°9°
0%
Sun Night
Mostly Cloudy
48°9°
0%
Mon Night
Mostly Cloudy
48°9°
0%
Tuesday
Sunny
72°22°
0%

Night: Clear. Patchy fog. Near steady temperature in the upper 40s. Calm winds.

Names listed above may include county names.

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