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Decatur, IL Weather Forecast & Current Conditions

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Decatur, IL Weather Maps

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Decatur Weather Map
UTC Time: 10/3/2026, 23:09
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Aeronautical Observation: Automated synoptic observations via NWS Gateway.
Auto-refresh in: 5:02

Decatur, IL Regional Weather

Expires:202610040000;;487187
ASUS43 KLOT 032306
RWRIL 

ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 PM CDT SAT OCT 03 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.


ILZ028>032-037-038-041>044-048-051>054-059>061-040000-
CENTRAL ILLINOIS
  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
PONTIAC        CLEAR     70  45  40 SE6       30.16F TC  21           
BLOOMINGTON    CLEAR     67  47  48 S7        30.18S TC  19           
DECATUR        CLEAR     70  43  37 SE7       30.17R TC  21           
PEORIA         CLEAR     70  45  40 SE5       30.15S TC  21           
LACON*         CLEAR     69  46  43 CALM      30.14S TC  21           
SPRINGFIELD    CLEAR     71  42  35 SE7       30.15S TC  22           
TAYLORVILLE    NOT AVBL                                               
$$


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

Decatur, IL

Tonight
Clear
45°7°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tue-Tue Night
Clear
75°24°
0%
Wednesday
Clear
82°28°
0%
Thu Night
Clear
82°28°
0%
Friday
Clear
82°28°
0%
Saturday
Clear
82°28°
0%

Night: Mostly clear. Lows in the mid 40s. East winds around 5 mph.

Monticello, IL

Tonight
Clear
45°7°
0%
Sunday
Sunny
75°/ 45° 24°/ 7°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tuesday
Sunny
75°/ 50° 24°/ 10°
0%
Wednesday
Clear
50°10°
0%
Thu Night
Clear
50°10°
0%
Friday
Clear
82°28°
0%
Saturday
Clear
82°28°
0%

Night: Mostly clear. Lows in the mid 40s. Southeast winds around 5 mph.

Sullivan, IL

Tonight
Cloudy
45°7°
0%
Sunday
Sunny
78°/ 45° 26°/ 7°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tue-Tue Night
Clear
75°24°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°/ 52° 28°/ 11°
0%
Fri Night
Clear
52°11°
0%
Saturday
Sunny
85°29°
0%

Night: Partly cloudy this evening, then becoming mostly clear. Lows in the mid 40s. East winds around 5 mph this evening, becoming light and variable.

Lincoln, IL

Tonight
Clear
48°9°
0%
Sunday
Sunny
75°/ 48° 24°/ 9°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tuesday
Sunny
75°/ 52° 24°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°/ 55° 11°/ 13°
0%
Saturday
Sunny
82°28°
0%

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

Shelbyville, IL

Tonight
Cloudy
45°7°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
75°/ 42° 24°/ 6°
0%
Tue-Tue Night
Clear
75°24°
0%
Wed-Wed Night
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Fri Night
Clear
82°28°
0%
Saturday
Sunny
85°29°
0%

Night: Partly cloudy this evening, then clearing. Lows in the mid 40s. East winds around 5 mph this evening, becoming light and variable.

Clinton, IL

Tonight
Clear
48°9°
0%
Sunday
Sunny
75°/ 45° 24°/ 7°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tuesday
Sunny
75°/ 52° 24°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thu Night
Clear
52°11°
0%
Friday
Clear
80°27°
0%
Saturday
Clear
80°27°
0%

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

Springfield, IL

Tonight
Clear
48°9°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tuesday
Sunny
75°/ 52° 24°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thu Night
Clear
52°11°
0%
Fri-Fri Night
Clear
82°28°
0%
Saturday
Sunny
85°29°
0%

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

Taylorville, IL

Tonight
Clear
45°7°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tuesday
Sunny
78°/ 52° 26°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thursday
Clear
52°/ 55° 11°/ 13°
0%
Friday
Clear
55°13°
0%
Saturday
Clear
55°13°
0%

Night: Mostly clear. Lows in the mid 40s. East winds around 5 mph this evening, becoming light and variable.

Champaign, IL

Tonight
Clear
45°7°
0%
Sunday
Sunny
75°/ 48° 24°/ 9°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tuesday
Sunny
75°/ 52° 24°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°/ 52° 11°/ 11°
0%
Saturday
Sunny
82°28°
0%

Night: Mostly clear. Lows in the mid 40s. East winds around 5 mph.

Tuscola, IL

Tonight
Clear
45°7°
0%
Sunday
Sunny
78°/ 45° 26°/ 7°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tue-Tue Night
Clear
75°24°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°/ 52° 28°/ 11°
0%
Fri Night
Clear
52°11°
0%
Saturday
Sunny
85°29°
0%

Night: Mostly clear. Lows in the mid 40s. East winds around 5 mph this evening, becoming light and variable.

Bloomington, IL

Tonight
Clear
45°7°
0%
Sunday
Sunny
75°/ 45° 24°/ 7°
0%
Monday
Sunny
68°/ 42° 20°/ 6°
0%
Tuesday
Sunny
72°/ 52° 22°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°/ 52° 11°/ 11°
0%

Night: Clear. Lows in the mid 40s. Southeast winds around 5 mph.

Petersburg, IL

Tonight
Clear
48°9°
0%
Sunday
Sunny
75°/ 45° 24°/ 7°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue-Tue Night
Clear
75°24°
0%
Wednesday
Clear
80°27°
0%
Thu Night
Clear
80°27°
0%
Friday
Clear
82°28°
0%
Saturday
Clear
82°28°
0%

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

Charleston, IL

Tonight
Cloudy
45°7°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tue-Tue Night
Clear
75°24°
0%
Wed-Wed Night
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Fri Night
Clear
82°28°
0%
Saturday
Sunny
85°29°
0%

Night: Partly cloudy this evening, then clearing. Lows in the mid 40s. East winds around 5 mph this evening, becoming light and variable.

Litchfield, IL

Afternoon
Sunny
72°/ 45° 22°/ 7°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
75°/ 48° 24°/ 9°
0%
Tue Night
Clear
48°9°
0%
Wednesday
Sunny
82°/ 52° 28°/ 11°
0%
Thursday
Sunny
82°/ 52° 28°/ 11°
0%

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

Night: Partly cloudy. Lows in the mid 40s. East winds around 5 mph in the evening, becoming light and variable.

Pekin, IL

Tonight
Clear
48°9°
0%
Sunday
Sunny
75°/ 45° 24°/ 7°
0%
Monday
Sunny
68°/ 45° 20°/ 7°
0%
Tuesday
Sunny
72°/ 52° 22°/ 11°
0%
Wednesday
Clear
52°11°
0%
Thursday
Clear
52°11°
0%
Friday
Clear
52°/ 55° 11°/ 13°
0%

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

Greenup, IL

Tonight
Cloudy
45°7°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
72°/ 42° 22°/ 6°
0%
Tue-Tue Night
Clear
75°24°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°/ 52° 28°/ 11°
0%
Fri Night
Clear
52°11°
0%
Saturday
Sunny
85°29°
0%

Night: Partly cloudy. Lows in the mid 40s. East winds around 5 mph this evening, becoming light and variable.

Havana, IL

Tonight
Clear
48°9°
0%
Sunday
Sunny
75°/ 45° 24°/ 7°
0%
Monday
Sunny
70°/ 45° 21°/ 7°
0%
Tue-Tue Night
Clear
75°24°
0%
Wednesday
Clear
78°26°
0%
Thursday
Clear
78°26°
0%
Friday
Clear
78°/ 55° 26°/ 13°
0%

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

Effingham, IL

Tonight
Cloudy
48°9°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
75°/ 45° 24°/ 7°
0%
Tue-Tue Night
Clear
75°24°
0%
Wednesday
Clear
82°28°
0%
Thursday
Clear
82°28°
0%
Fri Night
Clear
82°28°
0%
Saturday
Sunny
85°29°
0%

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

Greene County, IL

Afternoon
Sunny
72°/ 45° 22°/ 7°
0%
Sunday
Sunny
78°/ 48° 26°/ 9°
0%
Monday
Sunny
72°/ 45° 22°/ 7°
0%
Tue Night
Clear
52°11°
0%
Wednesday
Clear
52°11°
0%
Thu Night
Clear
52°11°
0%
Friday
Sunny
82°28°
0%

Day: Sunny. Near steady temperature in the lower 70s. East winds around 5 mph.

Night: Partly cloudy in the evening, then clearing. Lows in the mid 40s. East winds around 5 mph in the evening, becoming light and variable.

Paxton, IL

Afternoon
Sunny
70°/ 45° 21°/ 7°
0%
Sunday
Sunny
75°/ 45° 24°/ 7°
0%
Monday
Sunny
68°/ 42° 20°/ 6°
0%
Tuesday
Sunny
72°/ 50° 22°/ 10°
0%
Wednesday
Sunny
78°/ 48° 26°/ 9°
0%
Thursday
Sunny
75°/ 50° 24°/ 10°
0%
Friday
Sunny
75°24°
0%

Day: Sunny. Highs around 70. Southeast winds around 5 mph.

Night: Clear. Lows in the mid 40s. East winds around 5 mph, becoming south after midnight.

Names listed above may include county names.

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