Grand Chain, IL Weather Forecast & Alerts

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

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Current Conditions — Grand Chain, IL

MARION REGIONAL (KMWA)

Clear

NULL F
Humidity:%
Wind Speed:E 6.9 mph
Barometer:29.92 in
Dewpoint: F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 26 2026, 11:15 PM CDT
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5-Day Forecast — Grand Chain, IL

Sunday

High 84 °F
Partly Sunny
Sunday
Night
Low 62 °F
Chance of Rain
Monday

High 84 °F
Chance of T-storms
Monday
Night
Low 64 °F
T-storms
Tuesday

High 80 °F
Scattered T-storms Likely
Tuesday
Night
Low 59 °F
T-storms
Wednesday

High 71 °F
Slight Chance of Showers
Wednesday
Night
Low 48 °F
Mostly Clear
Thursday

High 71 °F
Partly Sunny

Detailed Forecast — Grand Chain, IL

Sunday
Partly Sunny. High near 84°F. Wind around 6 mph, with gusts as high as 10 mph.
Sunday Night
Chance of Rain. Low around 62°F. Wind 6 to 8 mph, with gusts as high as 16 mph.
Monday
Chance of Thunderstorms. High near 84°F. Wind 10 to 22 mph, with gusts as high as 37 mph.
Monday Night
Thunderstorms. Low around 64°F. Wind 5 to 16 mph, with gusts as high as 29 mph.
Tuesday
Scattered Thunderstorms Likely. High near 80°F. Wind 5 to 6 mph, with gusts as high as 12 mph.
Tuesday Night
Thunderstorms. Low around 59°F. Wind 5 to 6 mph, with gusts as high as 13 mph.
Wednesday
Slight Chance of Showers. High near 71°F. Wind 7 to 12 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly Clear. Low around 48°F. Wind around 2 mph, with gusts as high as 8 mph.
Thursday
Partly Sunny. High near 71°F. Wind 2 to 7 mph, with gusts as high as 13 mph.
Thursday Night
Partly Cloudy. Low around 48°F. Wind around 1 mph, with gusts as high as 3 mph.
Friday
Slight Chance of Showers. High near 68°F. Wind 5 to 8 mph, with gusts as high as 15 mph.
Friday Night
Partly Cloudy. Low around 46°F. Wind around 2 mph, with gusts as high as 6 mph.
Saturday
Mostly Sunny. High near 68°F. Wind 3 to 8 mph, with gusts as high as 15 mph.
Saturday Night
Mostly Clear. Low around 46°F. Wind around 1 mph, with gusts as high as 5 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 27, 2026

Observation History — Grand Chain, 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)
11:15 PM CDT E 6.9 10.00 Clear -- NULL % NA NA 29.92 1013.2
10:55 PM CDT 4.7 10.00 Clear -- NULL % NA NA 29.92 1013.2
10:35 PM CDT 0.0 10.00 Clear -- 67.1 54.0 63% NA NA 29.91 1012.9
10:15 PM CDT 5.8 10.00 Clear -- 67.8 54.1 62% NA NA 29.91 1012.9
09:55 PM CDT 4.7 10.00 Clear -- 66.7 54.0 63% NA NA 29.90 1012.5
09:35 PM CDT 0.0 10.00 Clear -- 68.9 53.4 58% NA NA 29.90 1012.5
09:15 PM CDT 3.4 10.00 Clear -- 69.1 53.6 58% NA NA 29.90 1012.5
08:55 PM CDT 3.4 10.00 Clear -- 70.7 53.1 54% NA 70.0 29.89 1012.2
08:35 PM CDT SE 3.4 10.00 Clear -- NULL % NA NA 29.89 1012.2
08:15 PM CDT SE 4.7 10.00 Clear -- NULL % NA NA 29.88 1011.9
07:55 PM CDT SE 3.4 10.00 Clear -- 72.3 53.4 51% NA 71.6 29.87 1011.5
07:35 PM CDT 3.4 10.00 Clear -- NULL % NA NA 29.88 1011.9
07:15 PM CDT 3.4 10.00 Clear -- 73.8 54.0 50% NA 73.2 29.87 1011.5
06:45 PM CDT 8.1 10.00 Mostly Cloudy -- 75.2 53.6 47% NA 74.7 29.87 1011.5
05:45 PM CDT SE 11.4 10.00 Partly Cloudy -- 77.0 53.6 44% NA 76.5 29.87 1011.5
04:45 PM CDT 10.3 10.00 Partly Cloudy -- 78.8 53.6 42% NA 78.3 29.88 1011.9
03:45 PM CDT S 5.8 10.00 Partly Cloudy -- 78.8 51.8 39% NA 78.3 29.88 1011.9
02:45 PM CDT S 6.9 10.00 Clear -- 78.8 51.8 39% NA 78.3 29.90 1012.5
01:45 PM CDT E 9.2 10.00 Clear -- 78.8 53.6 42% NA 78.3 29.92 1013.2
12:45 PM CDT SE 9.2 10.00 Clear -- 77.0 51.8 41% NA 76.3 29.94 1013.9
11:45 AM CDT 9.2 10.00 Clear -- 75.2 55.4 50% NA 74.8 29.96 1014.6
10:45 AM CDT E 6.9 10.00 Clear -- 71.6 55.4 57% NA 71.1 29.97 1014.9
09:45 AM CDT E 9.2 10.00 Clear -- 68.0 53.6 60% NA NA 29.96 1014.6
08:45 AM CDT E 6.9 10.00 Clear -- 64.4 53.6 68% NA NA 29.96 1014.6

Regional Weather Observation

MARION REGIONAL (KMWA)

Clear
NULL F

CAIRO (KCIR)

Clear
69.3 F

CARBONDALE/MURPH (KMDH)

Clear
66.2 F

CAPE GIRARDEAU (KCGI)

Clear
69.8 F

PADUCAH (KPAH)

Clear
64.4 F

PERRYVILLE (KPCD)

Clear
67.1 F
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