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Day 1 Outlook • April 18, 2026
Day 2 Outlook • April 19, 2026
Day 3 Outlook • April 20, 2026
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National Weather Radar

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dBZ 5
75

Hazardous Weather Conditions

Current Conditions: CHESTNUT, ILLINOIS

LINCOLN (KAAA)

Heavy Rain

61.7 F
Humidity:100%
Wind Speed: 0.0 mph
Barometer:29.75 in
Dewpoint:61.7 F
Visibility:3.00 mi
Precip:00.19 in
Heat Index:NA
Wind Chill:NA
Apr 17 2026, 10:55 PM CDT
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5 Day Forecast for CHESTNUT, ILLINOIS (62518)

Friday

High 84 °F
Chance of T-storms
Friday
Night
Low 46 °F
T-storms
Saturday

High 55 °F
Slight Chance of Rain Showers
Saturday
Night
Low 37 °F
Partly Cloudy
Sunday

High 60 °F
Partly Sunny
Sunday
Night
Low 35 °F
Mostly Clear
Monday

High 62 °F
Mostly Sunny
Monday
Night
Low 50 °F
Partly Cloudy
Tuesday

High 77 °F
Partly Sunny

Detailed Forecast for CHESTNUT, ILLINOIS (62518)

Friday
Chance of Thunderstorms. High near 84°F. Wind 18 to 21 mph, with gusts as high as 32 mph.
Friday Night
Thunderstorms. Low around 46°F. Wind 16 to 18 mph, with gusts as high as 31 mph.
Saturday
Slight Chance of Rain Showers. High near 55°F. Wind 16 to 20 mph, with gusts as high as 28 mph.
Saturday Night
Partly Cloudy. Low around 37°F. Wind 7 to 14 mph, with gusts as high as 22 mph.
Sunday
Partly Sunny. High near 60°F. Wind 8 to 18 mph, with gusts as high as 25 mph.
Sunday Night
Mostly Clear. Low around 35°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Monday
Mostly Sunny. High near 62°F. Wind 8 to 10 mph, with gusts as high as 15 mph.
Monday Night
Partly Cloudy. Low around 50°F. Wind around 12 mph, with gusts as high as 21 mph.
Tuesday
Partly Sunny. High near 77°F. Wind 13 to 18 mph, with gusts as high as 25 mph.
Tuesday Night
Partly Cloudy. Low around 55°F. Wind around 10 mph, with gusts as high as 17 mph.
Wednesday
Mostly Sunny. High near 82°F. Wind 9 to 10 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly Clear. Low around 59°F. Wind around 9 mph, with gusts as high as 16 mph.
Thursday
Isolated T-storm. High near 82°F. Wind 15 to 17 mph, with gusts as high as 24 mph.
Thursday Night
Chance of Thunderstorms. Low around 62°F. Wind around 14 mph, with gusts as high as 22 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 18, 2026

Observation History for CHESTNUT, ILLINOIS

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)
10:55 PM CDT 0.0 3.00 Heavy Rain 00.19 61.7 61.7 100% NA NA 29.75 1007.5
10:35 PM CDT S 5.7 7.00 Rain -- 61.7 61.7 100% NA NA 29.77 1008.1
10:15 PM CDT 5.00 Rain -- NULL % NA NA M
09:55 PM CDT W 4.7 10.00 Light Rain 00.41 62.2 62.2 100% NA NA 29.78 1008.5
09:15 PM CDT W 9.2 G 18.3 1.75 Heavy Thunderstorms and Heavy Rain 00.31 NULL 61.7 % NA NA M
08:55 PM CDT W 12.8 G 30.0 2.50 Mostly Cloudy 00.17 NULL 58.5 % NA NA M
08:35 PM CDT S 13.8 G 21.9 10.00 Clear -- 77.2 64.8 66% NA 77.7 M
07:55 PM CDT S 19.7 G 26.4 10.00 Clear and Windy -- 77.5 65.5 66% NA 78.1 29.68 1004.8
07:35 PM CDT G 30.0 10.00 Clear -- 77.5 65.7 67% NA 78.1 29.65 1004.1
07:15 PM CDT G 27.7 10.00 Clear -- 77.7 66.0 67% NA 78.4 29.64 1003.7
06:55 PM CDT S 16.1 G 27.7 10.00 Clear -- 77.9 66.2 67% NA 78.6 29.64 1003.7
06:35 PM CDT S 19.7 G 32.2 10.00 Clear and Windy -- 78.1 65.8 66% NA 78.6 29.65 1004.1
06:15 PM CDT S 17.3 G 26.5 10.00 Partly Cloudy -- 78.4 66.2 66% NA 79.2 29.64 1003.7
05:55 PM CDT S 18.3 G 32.2 10.00 Clear -- 79.2 65.5 63% NA 79.7 29.65 1004.1
05:35 PM CDT G 34.4 10.00 Partly Cloudy -- 79.7 65.3 62% NA 81.7 29.65 1004.1
04:55 PM CDT 10.00 NULL -- 81.9 64.9 57% NA 83.7 29.66 1004.4
04:35 PM CDT G 34.4 10.00 Partly Cloudy -- 82.4 65.3 56% NA 84.4 29.65 1004.1
03:35 PM CDT G 29.9 10.00 Mostly Cloudy -- 82.2 66.4 59% NA 84.6 29.74 1007.1
03:15 PM CDT G 27.6 10.00 Partly Cloudy -- NULL % NA NA M
02:55 PM CDT S 16.1 G 28.9 10.00 Partly Cloudy -- 82.4 66.7 59% NA 84.9 29.78 1008.5
02:35 PM CDT S 13.9 G 25.3 10.00 Partly Cloudy -- 82.4 66.2 58% NA 84.6 29.79 1008.8
02:15 PM CDT S 16.1 G 25.3 10.00 Mostly Cloudy -- 81.5 66.4 60% NA 83.8 29.80 1009.1
01:55 PM CDT S 12.8 G 25.3 10.00 Mostly Cloudy -- 82.0 66.9 60% NA 84.6 29.81 1009.5
01:15 PM CDT G 19.6 10.00 Mostly Cloudy -- NULL % NA NA M

Regional Weather Observation

LINCOLN (KAAA)

Heavy Rain
61.7 F

PEORIA (KPIA)

Rain and Fog/Mist
60.8 F

BLOOMINGTON/NORM (KBMI)

Rain
60.8 F

SPRINGFIELD (KSPI)

Light Rain
60.8 F

TAYLORVILLE (KTAZ)

Cloudy
60.8 F

DECATUR (KDEC)

Rain and Fog/Mist
60.8 F
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