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Waterloo High School, IL Weather Forecast & Current Conditions

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Waterloo High School Weather Map
UTC Time: 10/5/2026, 23:18
Your Time:
Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Waterloo High School, IL Regional Weather

Expires:202610060000;;597842
ASUS43 KLOT 052310
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 PM CDT MON OCT 05 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>102-060000-
SOUTHWEST ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
ALTON          CLEAR     73  39  29 NE3       30.18S TC  23           
BELLEVILLE     CLEAR     75  42  31 E3        30.14F TC  24           
CAHOKIA*       CLEAR     73  44  35 NE5       30.16S TC  23           
SPARTA*        CLEAR     74  36  25 NE6       30.17S TC  23           
$$


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

Waterloo High School, IL

Tonight
Clear
48°9°
0%
Tuesday
Sunny
82°/ 55° 28°/ 13°
0%
Wednesday
Sunny
88°/ 58° 31°/ 14°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°/ 52° 28°/ 11°
0%
Sat Night
Clear
58°14°
0%
Sun-Sun Night
Cloudy
82°28°
0%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Alton, IL

Tonight
Clear
48°9°
0%
Tuesday
Sunny
82°/ 55° 28°/ 13°
0%
Wednesday
Sunny
88°/ 58° 31°/ 14°
0%
Thursday
Clear
85°29°
0%
Friday
Clear
85°29°
0%
Saturday
Clear
85°/ 58° 29°/ 14°
0%
Sun-Sun Night
Cloudy
85°29°
0%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Alton, MO

Tonight
Clear
48°9°
0%
Tuesday
Sunny
82°/ 55° 28°/ 13°
0%
Wednesday
Sunny
88°/ 58° 31°/ 14°
0%
Thursday
Clear
85°29°
0%
Friday
Clear
85°29°
0%
Saturday
Clear
85°/ 58° 29°/ 14°
0%
Sun-Sun Night
Cloudy
85°29°
0%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Jefferson County, MO

Tonight
Clear
48°9°
0%
Tuesday
Sunny
82°/ 55° 28°/ 13°
0%
Wednesday
Sunny
88°/ 58° 31°/ 14°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°/ 52° 28°/ 11°
0%
Sat Night
Clear
58°14°
0%
Sun-Sun Night
Cloudy
82°28°
0%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Chester, IL

Tonight
Clear
48°9°
0%
Tuesday
Sunny
80°/ 55° 27°/ 13°
0%
Wednesday
Sunny
88°/ 58° 31°/ 14°
0%
Thursday
Clear
85°29°
0%
Friday
Clear
85°/ 52° 29°/ 11°
0%
Sat Night
Clear
58°14°
0%
Sunday
Rain Showers
82°/ 58° 28°/ 14°
20%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Centralia, IL

Tonight
Clear
48°9°
0%
Tuesday
Sunny
80°/ 52° 27°/ 11°
0%
Wednesday
Sunny
88°/ 55° 31°/ 13°
0%
Thursday
Clear
82°28°
0%
Friday
Clear
82°28°
0%
Sat Night
Clear
82°28°
0%
Sunday
Rain Showers
82°/ 58° 28°/ 14°
20%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Farmington, MO

Tonight
Clear
48°9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
88°/ 58° 31°/ 14°
0%
Thursday
Clear
85°29°
0%
Friday
Clear
85°/ 55° 29°/ 13°
0%
Sat Night
Clear
55°13°
0%
Sunday
Rain Showers
82°/ 58° 28°/ 14°
20%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. Northeast winds around 5 mph.

Washington, MO

Tonight
Clear
48°9°
0%
Tuesday
Sunny
82°/ 55° 28°/ 13°
0%
Wednesday
Sunny
88°/ 58° 31°/ 14°
0%
Thursday
Clear
85°29°
0%
Friday
Clear
85°/ 52° 29°/ 11°
0%
Sat Night-Sun
Clear
58°14°
0%
Sun Night
Cloudy
58°14°
0%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Pinckneyville, IL

Afternoon
Sunny
78°/ 48° 26°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
88°/ 55° 31°/ 13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°/ 52° 13°/ 11°
0%
Sat Night-Sun
Cloudy
55°13°
0%

Day: Sunny. Near steady temperature in the upper 70s. Northeast winds 5 to 10 mph.

Night: Clear. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.

Perryville, MO

Afternoon
Sunny
78°/ 48° 26°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
85°/ 58° 29°/ 14°
0%
Thursday
Clear
58°14°
0%
Friday
Clear
58°/ 52° 14°/ 11°
0%
Sat Night-Sun
Cloudy
58°14°
0%

Day: Sunny. Near steady temperature in the upper 70s. Northeast winds around 5 mph.

Night: Clear. Lows in the upper 40s. East winds around 5 mph in the evening, becoming light and variable.

Carbondale, IL

Afternoon
Sunny
75°/ 48° 24°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
85°/ 55° 29°/ 13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°/ 52° 13°/ 11°
0%
Sat Night-Sun
Cloudy
58°14°
0%

Day: Sunny. Near steady temperature in the mid 70s. Northeast winds 5 to 10 mph.

Night: Clear. Lows in the upper 40s. East winds around 5 mph in the evening, becoming light and variable.

Litchfield, IL

Tonight
Clear
48°9°
0%
Tuesday
Sunny
78°/ 55° 26°/ 13°
0%
Wednesday
Sunny
85°/ 55° 29°/ 13°
0%
Thursday
Clear
82°28°
0%
Fri Night
Clear
82°28°
0%
Saturday
Sunny
85°/ 58° 29°/ 14°
0%
Sunday
Rain Showers
82°/ 58° 28°/ 14°
20%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Greene County, IL

Tonight
Clear
48°9°
0%
Tuesday
Sunny
80°/ 55° 27°/ 13°
0%
Wednesday
Sunny
85°/ 55° 29°/ 13°
0%
Thursday
Clear
82°28°
0%
Fri Night
Clear
82°28°
0%
Saturday
Sunny
85°/ 58° 29°/ 14°
0%
Sun-Sun Night
Cloudy
85°29°
0%
Columbus Day
Rain Showers
82°28°
20%

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Cape Girardeau, MO

Afternoon
Sunny
75°/ 48° 24°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
85°/ 58° 29°/ 14°
0%
Thursday
Clear
58°14°
0%
Friday
Clear
58°/ 55° 14°/ 13°
0%
Sat Night-Sun
Cloudy
58°14°
0%

Day: Sunny. Near steady temperature in the mid 70s. Northeast winds around 5 mph.

Night: Clear. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.

Mount Vernon, IL

Afternoon
Sunny
78°/ 48° 26°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
88°/ 55° 31°/ 13°
0%
Thursday
Clear
55°13°
0%
Fri Night
Clear
55°13°
0%
Saturday
Sunny
85°/ 55° 29°/ 13°
0%

Day: Sunny. Near steady temperature in the upper 70s. Northeast winds 5 to 10 mph.

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Marble Hill, MO

Afternoon
Sunny
78°/ 48° 26°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
85°/ 58° 29°/ 14°
0%
Thursday
Clear
58°14°
0%
Friday
Clear
58°/ 52° 14°/ 11°
0%
Sat Night-Sun
Cloudy
58°14°
0%

Day: Sunny. Near steady temperature in the upper 70s. Northeast winds around 5 mph.

Night: Clear. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.

West Frankfort, IL

Afternoon
Sunny
78°/ 48° 26°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
85°/ 55° 29°/ 13°
0%
Thursday
Clear
55°13°
0%
Fri Night
Clear
55°13°
0%
Saturday
Sunny
85°/ 58° 29°/ 14°
0%

Day: Sunny. Near steady temperature in the upper 70s. Northeast winds 5 to 10 mph.

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Herrin, IL

Afternoon
Sunny
75°/ 48° 24°/ 9°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Sunny
85°/ 55° 29°/ 13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°/ 52° 13°/ 11°
0%
Sat Night-Sun
Cloudy
58°14°
0%

Day: Sunny. Near steady temperature in the mid 70s. Northeast winds 5 to 10 mph.

Night: Clear. Lows in the upper 40s. East winds around 5 mph.

Jonesboro, IL

Afternoon
Sunny
75°/ 48° 24°/ 9°
0%
Tuesday
Sunny
75°/ 52° 24°/ 11°
0%
Wednesday
Sunny
82°/ 58° 28°/ 14°
0%
Thursday
Clear
58°14°
0%
Friday
Clear
58°/ 55° 14°/ 13°
0%
Sat Night-Sun
Cloudy
58°14°
0%

Day: Sunny. Near steady temperature in the mid 70s. Northeast winds around 5 mph.

Night: Clear. Lows in the upper 40s. Northeast winds around 5 mph.

Piedmont, MO

Afternoon
Sunny
78°/ 48° 26°/ 9°
0%
Tuesday
Sunny
78°/ 50° 26°/ 10°
0%
Wednesday
Sunny
85°/ 55° 29°/ 13°
0%
Thursday
Clear
55°13°
0%
Friday
Clear
55°/ 52° 13°/ 11°
0%
Sat Night-Sun
Cloudy
55°13°
0%

Day: Sunny. Near steady temperature in the upper 70s. Northeast winds around 5 mph.

Night: Clear. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.

Names listed above may include county names.

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