Mounds, IL Weather Forecast & Alerts

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

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Current Conditions — Mounds, IL

CAIRO (KCIR)

Clear

70.2 F
Humidity:60%
Wind Speed:SE 6.9 mph
Barometer:29.90 in
Dewpoint:55.8 F
Visibility:10.00 mi
Precip:--
Heat Index:69.6 F
Wind Chill:NA
Apr 27 2026, 12:35 AM CDT
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5-Day Forecast — Mounds, IL

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
Partly Sunny
Wednesday
Night
Low 48 °F
Mostly Clear
Thursday

High 71 °F
Partly Sunny
Thursday
Night
Low 48 °F
Partly Cloudy
Friday

High 68 °F
Slight Chance of Showers

Detailed Forecast — Mounds, IL

Monday
Chance of Thunderstorms. High near 84°F. Wind 12 to 23 mph, with gusts as high as 36 mph.
Monday Night
Thunderstorms. Low around 64°F. Wind 5 to 17 mph, with gusts as high as 30 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 6 to 7 mph, with gusts as high as 14 mph.
Wednesday
Partly Sunny. 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 3 mph, with gusts as high as 9 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 14 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 5 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.
Sunday
Mostly Sunny. High near 73°F. Wind 3 to 7 mph, with gusts as high as 14 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 27, 2026

Observation History — Mounds, 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)
12:35 AM CDT SE 6.9 10.00 Clear -- 70.2 55.8 60% NA 69.6 29.90 1012.5
12:15 AM CDT SE 3.4 10.00 Clear -- 69.4 55.9 62% NA NA 29.91 1012.9
11:55 PM CDT 0.0 10.00 Clear -- 70.0 55.2 59% NA NA 29.90 1012.5
11:35 PM CDT 4.7 10.00 Clear -- 69.1 55.6 62% NA NA 29.90 1012.5
11:15 PM CDT 4.7 10.00 Clear -- 69.3 55.4 61% NA NA 29.90 1012.5
10:55 PM CDT 4.7 10.00 Clear -- 69.6 55.4 61% NA NA 29.90 1012.5
10:35 PM CDT 5.8 10.00 Clear -- 70.5 55.0 58% NA 70.0 29.89 1012.2
10:15 PM CDT 8.1 10.00 Clear -- 70.2 55.0 59% NA 69.6 29.89 1012.2
09:55 PM CDT 6.9 10.00 Clear -- 70.3 55.0 58% NA 69.8 29.88 1011.9
09:35 PM CDT 6.9 10.00 Clear -- 70.9 55.0 57% NA 70.3 29.89 1012.2
09:15 PM CDT 5.8 10.00 Clear -- 71.8 54.7 55% NA 71.2 29.89 1012.2
08:55 PM CDT 6.9 10.00 Clear -- 72.5 54.5 53% NA 72.0 29.88 1011.9
08:35 PM CDT 6.9 10.00 Clear -- 73.4 54.5 52% NA 72.9 29.87 1011.5
08:15 PM CDT 6.9 10.00 Clear -- 73.4 54.5 52% NA 72.9 29.87 1011.5
07:55 PM CDT 4.7 10.00 Clear -- 73.8 54.7 51% NA 73.2 29.87 1011.5
07:35 PM CDT E 6.9 10.00 Clear -- 76.1 54.3 47% NA 75.6 29.86 1011.2
07:15 PM CDT E 8.1 10.00 Clear -- 77.4 54.0 44% NA 76.8 29.85 1010.8
06:55 PM CDT 10.3 10.00 Clear -- 79.0 54.0 42% NA 78.6 29.85 1010.8
06:35 PM CDT 10.3 10.00 Clear -- 80.6 53.4 39% NA 80.2 29.86 1011.2
06:15 PM CDT E 10.3 10.00 Clear -- 81.7 52.9 37% NA 81.0 29.86 1011.2
05:55 PM CDT 11.4 10.00 Clear -- 82.4 53.2 37% NA 81.3 29.87 1011.5
05:35 PM CDT 8.1 10.00 Clear -- 82.6 52.5 35% NA 81.5 29.87 1011.5
05:15 PM CDT 10.3 10.00 Clear -- 82.6 52.9 36% NA 81.5 29.87 1011.5
04:55 PM CDT E 9.2 10.00 Clear -- 83.1 53.6 36% NA 82.0 29.87 1011.5

Regional Weather Observation

CAIRO (KCIR)

Clear
70.2 F

CAPE GIRARDEAU (KCGI)

Partly Cloudy
69.8 F

CARBONDALE/MURPH (KMDH)

Clear
66.2 F

MARION REGIONAL (KMWA)

Clear
67.1 F

PERRYVILLE (KPCD)

Clear
68.2 F

SIKESTON (KSIK)

NULL
69.1 F
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