Macon, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Macon, IL.

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Current Conditions — Macon, IL

SPRINGFIELD (KSPI)

Clear

78.8 F
Humidity:48%
Wind Speed: mph
Barometer:29.84 in
Dewpoint:57.2 F
Visibility:10.00 mi
Precip:--
Heat Index:78.6 F
Wind Chill:NA
Apr 23 2026, 12:20 PM CDT
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5-Day Forecast — Macon, IL

Thursday

High 80 °F
Partly Sunny
Thursday
Night
Low 62 °F
T-storms Likely
Friday

High 73 °F
T-storms
Friday
Night
Low 50 °F
Mostly Cloudy
Saturday

High 73 °F
Mostly Sunny
Saturday
Night
Low 50 °F
Mostly Cloudy
Sunday

High 75 °F
Mostly Cloudy
Sunday
Night
Low 59 °F
T-storms Likely
Monday

High 73 °F
T-storms

Detailed Forecast — Macon, IL

Thursday
Partly Sunny. High near 80°F. Wind 14 to 23 mph, with gusts as high as 31 mph.
Thursday Night
Thunderstorms Likely. Low around 62°F. Wind 16 to 18 mph, with gusts as high as 26 mph.
Friday
Thunderstorms. High near 73°F. Wind 10 to 16 mph, with gusts as high as 24 mph.
Friday Night
Mostly Cloudy. Low around 50°F. Wind around 9 mph, with gusts as high as 16 mph.
Saturday
Mostly Sunny. High near 73°F. Wind 9 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Mostly Cloudy. Low around 50°F. Wind around 10 mph, with gusts as high as 15 mph.
Sunday
Mostly Cloudy. High near 75°F. Wind around 14 mph, with gusts as high as 20 mph.
Sunday Night
Thunderstorms Likely. Low around 59°F. Wind around 17 mph, with gusts as high as 24 mph.
Monday
Thunderstorms. High near 73°F. Wind 20 to 23 mph, with gusts as high as 32 mph.
Monday Night
Chance of Showers. Low around 50°F. Wind around 17 mph, with gusts as high as 23 mph.
Tuesday
Mostly Sunny. High near 68°F. Wind 10 to 17 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly Clear. Low around 46°F. Wind around 6 mph, with gusts as high as 8 mph.
Wednesday
Slight Chance of Rain Showers. High near 68°F. Wind 9 to 12 mph, with gusts as high as 16 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 23, 2026

Observation History — Macon, IL

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
12:20 PM CDT 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.84 1010.5
12:15 PM CDT G 24.2 10.00 Clear -- 80.6 57.2 45% NA 80.8 29.85 1010.8
12:05 PM CDT G 27.6 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.85 1010.8
12:00 PM CDT S 15.0 10.00 Mostly Clear -- 78.8 57.2 48% NA 78.6 29.85 1010.8
11:50 AM CDT G 24.2 10.00 Mostly Clear -- 78.8 57.2 48% NA 78.6 29.85 1010.8
11:40 AM CDT 10.00 Partly Cloudy -- 77.0 57.2 50% NA 76.8 29.86 1011.2
11:35 AM CDT 10.00 Mostly Cloudy -- 77.0 57.2 50% NA 76.8 29.86 1011.2
11:30 AM CDT G 24.2 10.00 Mostly Cloudy -- 78.8 57.2 48% NA 78.6 29.87 1011.5
11:25 AM CDT G 26.5 10.00 Mostly Cloudy -- 78.8 57.2 48% NA 78.6 29.87 1011.5
11:15 AM CDT G 28.8 10.00 Partly Cloudy -- 77.0 57.2 50% NA 76.8 29.87 1011.5
11:10 AM CDT 16.1 10.00 Partly Cloudy -- 78.8 59.0 51% NA 78.8 29.87 1011.5
11:00 AM CDT 10.00 Partly Cloudy -- 75.2 57.2 54% NA 75.0 29.88 1011.9
10:50 AM CDT 10.00 Mostly Cloudy -- 75.2 57.2 54% NA 75.0 29.88 1011.9
10:40 AM CDT G 24.2 7.00 Mostly Cloudy -- 73.4 57.2 57% NA 73.0 29.88 1011.9
10:35 AM CDT 7.00 Partly Cloudy -- 73.4 57.2 57% NA 73.0 29.88 1011.9
10:30 AM CDT S 16.1 10.00 Partly Cloudy -- 75.2 57.2 54% NA 75.0 29.89 1012.2
10:25 AM CDT 10.00 Mostly Clear -- 75.2 57.2 54% NA 75.0 29.89 1012.2
10:15 AM CDT S 15.0 G 20.7 9.00 Clear -- 73.4 57.2 57% NA 73.0 29.89 1012.2
10:10 AM CDT 9.00 Clear -- 73.4 57.2 57% NA 73.0 29.89 1012.2
10:05 AM CDT 10.00 Clear -- 73.4 57.2 57% NA 73.0 29.89 1012.2
09:50 AM CDT 10.00 Clear -- 73.4 57.2 57% NA 73.0 29.90 1012.5
09:45 AM CDT 10.00 Clear -- 73.4 57.2 57% NA 73.0 29.90 1012.5
09:35 AM CDT G 24.2 10.00 Clear -- 71.6 57.2 60% NA 71.2 29.91 1012.9
09:20 AM CDT 10.00 Clear -- 69.8 57.2 64% NA NA 29.91 1012.9

Regional Weather Observation

SPRINGFIELD (KSPI)

Clear
78.8 F

DECATUR (KDEC)

Partly Cloudy
75.2 F

TAYLORVILLE (KTAZ)

Clear
75.2 F

LINCOLN (KAAA)

Mostly Cloudy
77.9 F

BLOOMINGTON/NORM (KBMI)

Partly Cloudy
75.2 F

LITCHFIELD MUNI (K3LF)

Clear
76.1 F
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