Harrisonville, IL Weather Forecast & Current Conditions

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Harrisonville, IL Weather Maps

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Harrisonville Weather Map
UTC Time: 10/27/2026, 11:18
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Harrisonville, IL Regional Weather

Expires:202610271200;;799037
ASUS43 KLOT 271110
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 AM CDT TUE OCT 27 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.


ILZ079-100>102-271200-
SOUTHWEST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          PTCLDY    48  47  95 CALM      30.26R TC   9           
BELLEVILLE     PTCLDY    47  46  97 CALM      30.24R TC   8           
CAHOKIA*       PTCLDY    46  46 100 CALM      30.25R TC   8           
SPARTA*        PTCLDY    47  47 100 CALM      30.27R TC   9           
$$


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

Harrisonville, IL

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
75°/ 50° 24°/ 10°
0%
Wednesday
Sunny
80°/ 52° 27°/ 11°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Friday
Mostly Cloudy
80°/ 55° 27°/ 13°
0%
Saturday
Rain Showers
72°/ 55° 22°/ 13°
60%
Sunday
Rain Showers
75°/ 55° 24°/ 13°
30%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Patchy fog. Near steady temperature in the lower 50s. South winds around 5 mph.

Jefferson County, MO

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
75°/ 50° 24°/ 10°
0%
Wednesday
Sunny
80°/ 52° 27°/ 11°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Friday
Mostly Cloudy
80°/ 55° 27°/ 13°
0%
Saturday
Rain Showers
72°/ 55° 22°/ 13°
60%
Sunday
Rain Showers
75°/ 55° 24°/ 13°
30%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Patchy fog. Near steady temperature in the lower 50s. South winds around 5 mph.

Alton, MO

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
75°/ 52° 24°/ 11°
0%
Wednesday
Sunny
80°/ 55° 27°/ 13°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
60%
Sunday
Rain Showers
75°/ 55° 24°/ 13°
40%
Monday
Thunderstorms
75°24°
60%

Night: Mostly cloudy. Patchy fog. Near steady temperature in the lower 50s. South winds around 5 mph.

Alton, IL

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
75°/ 52° 24°/ 11°
0%
Wednesday
Sunny
80°/ 55° 27°/ 13°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
60%
Sunday
Rain Showers
75°/ 55° 24°/ 13°
40%
Monday
Thunderstorms
75°24°
60%

Night: Mostly cloudy. Patchy fog. Near steady temperature in the lower 50s. South winds around 5 mph.

Chester, IL

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
75°/ 48° 24°/ 9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Saturday
Rain Showers
72°/ 55° 22°/ 13°
50%
Sun-Sun Night
Rain Showers
75°24°
20%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Patchy fog. Near steady temperature in the lower 50s. South winds around 5 mph.

Farmington, MO

Tonight
Mostly Cloudy
45°7°
0%
Tuesday
Mostly Cloudy
72°/ 48° 22°/ 9°
0%
Wednesday
Sunny
78°/ 50° 26°/ 10°
0%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Friday
Mostly Cloudy
78°/ 55° 26°/ 13°
0%
Saturday
Rain Showers
72°/ 52° 22°/ 11°
50%
Sunday
Rain Showers
75°/ 52° 24°/ 11°
30%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Lows in the mid 40s. Light and variable winds.

Washington, MO

Tonight
Mostly Cloudy
48°9°
0%
Tuesday
Mostly Cloudy
75°/ 52° 24°/ 11°
0%
Wednesday
Sunny
78°/ 55° 26°/ 13°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Friday
Mostly Cloudy
78°/ 55° 26°/ 13°
0%
Saturday
Rain Showers
72°/ 52° 22°/ 11°
50%
Sunday
Rain Showers
75°/ 55° 24°/ 13°
40%
Monday
Rain Showers
72°22°
60%

Night: Mostly cloudy. Lows in the upper 40s. South winds around 5 mph.

Centralia, IL

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
75°/ 50° 24°/ 10°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
50%
Sun-Sun Night
Rain Showers
75°24°
20%
Monday
Rain Showers
72°22°
50%

Night: Mostly cloudy. Near steady temperature in the lower 50s. Light and variable winds.

Perryville, MO

Overnight
Mostly Cloudy
50°10°
0%
Tuesday
Mostly Cloudy
75°/ 48° 24°/ 9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Fri-Fri Night
Mostly Cloudy
78°26°
0%
Saturday
Rain Showers
72°/ 55° 22°/ 13°
50%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Near steady temperature around 50. Calm winds.

Greene County, IL

Tonight
Mostly Cloudy
50°10°
0%
Tuesday
Mostly Cloudy
75°/ 52° 24°/ 11°
0%
Wednesday
Sunny
78°/ 55° 26°/ 13°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Sat-Sat Night
Rain Showers
72°22°
50%
Sunday
Rain Showers
75°/ 55° 24°/ 13°
40%
Monday
Thunderstorms
72°22°
60%

Night: Mostly cloudy. Lows around 50. South winds around 5 mph.

Pinckneyville, IL

Overnight
Mostly Cloudy
48°9°
0%
Tuesday
Mostly Cloudy
75°/ 48° 24°/ 9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
50%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Near steady temperature in the upper 40s. Calm winds.

Litchfield, IL

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
72°/ 50° 22°/ 10°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri-Fri Night
Mostly Cloudy
78°26°
0%
Saturday
Rain Showers
72°/ 55° 22°/ 13°
50%
Sun Night
Rain Showers
55°13°
30%
Monday
Thunderstorms
72°22°
50%

Night: Mostly cloudy. Near steady temperature in the lower 50s. Light and variable winds.

Carbondale, IL

Overnight
Mostly Cloudy
50°10°
0%
Tuesday
Mostly Cloudy
75°/ 48° 24°/ 9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
80°/ 52° 27°/ 11°
0%
Fri-Fri Night
Mostly Cloudy
78°26°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
50%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Near steady temperature around 50. Calm winds.

Marble Hill, MO

Overnight
Mostly Cloudy
48°9°
0%
Tuesday
Partly Cloudy
75°/ 48° 24°/ 9°
0%
Wednesday
Sunny
78°/ 48° 26°/ 9°
0%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Fri-Fri Night
Mostly Cloudy
78°26°
0%
Saturday
Rain Showers
72°/ 52° 22°/ 11°
50%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Near steady temperature in the upper 40s. Calm winds.

Cape Girardeau, MO

Overnight
Mostly Cloudy
48°9°
0%
Tuesday
Mostly Cloudy
75°/ 48° 24°/ 9°
0%
Wednesday
Sunny
78°/ 50° 26°/ 10°
0%
Thursday
Sunny
80°/ 52° 27°/ 11°
0%
Fri-Fri Night
Mostly Cloudy
78°26°
0%
Saturday
Rain Showers
72°/ 55° 22°/ 13°
50%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Monday
Rain Showers
75°24°
40%

Night: Mostly cloudy. Near steady temperature in the upper 40s. Calm winds.

Lake Spring, MO

Tonight
Mostly Cloudy
48°9°
0%
Tuesday
Mostly Cloudy
72°/ 48° 22°/ 9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Fri Night
Cloudy
55°13°
0%
Saturday
Rain Showers
70°/ 52° 21°/ 11°
60%
Sunday
Rain Showers
72°/ 55° 22°/ 13°
40%
Monday
Rain Showers
72°22°
60%

Night: Mostly cloudy. Near steady temperature in the upper 40s. South winds around 5 mph.

Northwye, MO

Tonight
Mostly Cloudy
52°11°
0%
Tuesday
Mostly Cloudy
75°/ 52° 24°/ 11°
0%
Wednesday
Sunny
78°/ 55° 26°/ 13°
0%
Thursday
Sunny
82°/ 55° 28°/ 13°
0%
Fri Night
Cloudy
55°13°
0%
Saturday
Rain Showers
72°/ 52° 22°/ 11°
50%
Sunday
Partly Cloudy
75°/ 55° 24°/ 13°
40%
Monday
Rain Showers
72°22°
60%

Night: Mostly cloudy. Near steady temperature in the lower 50s. South winds around 5 mph.

Piedmont, MO

Overnight
Mostly Cloudy
45°7°
0%
Tuesday
Mostly Cloudy
75°/ 45° 24°/ 7°
0%
Wednesday
Sunny
78°/ 45° 26°/ 7°
0%
Thursday
Sunny
82°/ 48° 28°/ 9°
0%
Fri-Fri Night
Mostly Cloudy
78°26°
0%
Saturday
Rain Showers
72°/ 52° 22°/ 11°
50%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Monday
Rain Showers
75°24°
50%

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

Mount Vernon, IL

Overnight
Mostly Cloudy
48°9°
0%
Tuesday
Partly Cloudy
75°/ 48° 24°/ 9°
0%
Wednesday
Sunny
78°/ 52° 26°/ 11°
0%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
50%
Sun-Sun Night
Mostly Cloudy
75°24°
0%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Near steady temperature in the upper 40s. Calm winds.

West Frankfort, IL

Overnight
Mostly Cloudy
48°9°
0%
Tuesday
Partly Cloudy
78°/ 48° 26°/ 9°
0%
Wednesday
Sunny
80°/ 52° 27°/ 11°
0%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%
Fri-Fri Night
Mostly Cloudy
80°27°
0%
Saturday
Rain Showers
75°/ 55° 24°/ 13°
50%
Sun Night
Mostly Cloudy
55°13°
0%
Monday
Rain Showers
75°24°
50%

Night: Mostly cloudy. Near steady temperature in the upper 40s. Calm winds.

Names listed above may include county names.

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