Cairo, IL Weather Forecast & Alerts

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

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Current Conditions — Cairo, IL

CAIRO (KCIR)

Clear

59.4 F
Humidity:63%
Wind Speed: 3.4 mph
Barometer:30.16 in
Dewpoint:46.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 07:35 AM CDT
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5-Day Forecast — Cairo, IL

Wednesday

High 80 °F
Forecast Missing
Wednesday
Night
Low 57 °F
Mostly Clear
Thursday

High 82 °F
Partly Sunny
Thursday
Night
Low 64 °F
Isolated T-storm
Friday

High 77 °F
T-storms
Friday
Night
Low 60 °F
Rain Likely
Saturday

High 78 °F
Slight Chance of Showers
Saturday
Night
Low 57 °F
Partly Cloudy
Sunday

High 80 °F
Isolated T-storm

Detailed Forecast — Cairo, IL

Wednesday
Sunny. High near 80°F. Wind 7 to 12 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly Clear. Low around 57°F. Wind 3 to 6 mph, with gusts as high as 9 mph.
Thursday
Partly Sunny. High near 82°F. Wind 6 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Isolated T-storm. Low around 64°F. Wind around 10 mph, with gusts as high as 18 mph.
Friday
Thunderstorms. High near 77°F. Wind 6 to 13 mph, with gusts as high as 22 mph.
Friday Night
Rain Likely. Low around 60°F. Wind around 3 mph, with gusts as high as 7 mph.
Saturday
Slight Chance of Showers. High near 78°F. Wind 5 to 7 mph, with gusts as high as 13 mph.
Saturday Night
Partly Cloudy. Low around 57°F. Wind around 3 mph, with gusts as high as 8 mph.
Sunday
Isolated T-storm. High near 80°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Sunday Night
Chance of Thunderstorms. Low around 64°F. Wind around 7 mph, with gusts as high as 13 mph.
Monday
Thunderstorms Likely. High near 80°F. Wind 10 to 14 mph, with gusts as high as 23 mph.
Monday Night
Scattered Showers. Low around 57°F. Wind around 7 mph, with gusts as high as 14 mph.
Tuesday
Slight Chance of Showers. High near 75°F. Wind 5 to 8 mph, with gusts as high as 14 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 22, 2026

Observation History — Cairo, 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)
07:35 AM CDT 3.4 10.00 Clear -- 59.4 46.8 63% NA NA 30.16 1021.3
07:15 AM CDT 0.0 10.00 Clear -- 57.7 46.6 66% NA NA 30.15 1021.0
06:55 AM CDT 0.0 10.00 Clear -- 57.2 46.2 67% NA NA 30.15 1021.0
06:35 AM CDT 0.0 10.00 Clear -- 56.3 46.4 69% NA NA 30.14 1020.7
06:15 AM CDT 0.0 10.00 Clear -- 57.9 45.9 64% NA NA 30.14 1020.7
05:55 AM CDT SW 3.4 10.00 Clear -- 58.6 45.7 62% NA NA 30.13 1020.3
05:35 AM CDT SW 4.7 10.00 Clear -- 59.2 45.7 61% NA NA 30.13 1020.3
05:15 AM CDT SW 4.7 10.00 Clear -- 59.7 45.7 60% NA NA 30.13 1020.3
04:55 AM CDT SW 4.7 10.00 Clear -- 60.6 45.3 57% NA NA 30.13 1020.3
04:35 AM CDT SW 5.8 10.00 Clear -- 61.0 45.1 56% NA NA 30.12 1020.0
04:15 AM CDT SW 5.8 10.00 Clear -- 61.2 45.1 56% NA NA 30.12 1020.0
03:55 AM CDT 6.9 10.00 Clear -- 62.2 44.8 53% NA NA 30.12 1020.0
03:35 AM CDT SW 8.1 10.00 Clear -- 63.5 44.6 50% NA NA 30.12 1020.0
03:15 AM CDT SW 8.1 10.00 Clear -- 63.9 44.1 48% NA NA 30.12 1019.7
02:55 AM CDT SW 9.2 10.00 Clear -- 64.6 43.9 47% NA NA 30.12 1019.7
02:35 AM CDT SW 11.4 10.00 Clear -- 65.1 43.7 46% NA NA 30.12 1019.7
02:15 AM CDT SW 11.4 G 16.1 10.00 Clear -- 65.7 43.5 45% NA NA 30.12 1020.0
01:55 AM CDT SW 10.3 G 17.2 10.00 Clear -- 66.0 43.5 44% NA NA 30.12 1020.0
01:35 AM CDT SW 11.4 G 16.1 10.00 Clear -- 66.9 42.8 42% NA NA 30.12 1020.0
01:15 AM CDT SW 9.2 10.00 Clear -- 67.1 43.2 42% NA NA 30.12 1020.0
12:55 AM CDT SW 8.1 10.00 Clear -- 66.9 43.5 43% NA NA 30.12 1020.0
12:35 AM CDT SW 9.2 10.00 Clear -- 67.3 43.7 42% NA NA 30.12 1020.0
12:15 AM CDT SW 11.4 G 18.3 10.00 Clear -- 68.0 43.0 40% NA NA 30.12 1020.0
11:55 PM CDT 10.3 10.00 Clear -- 67.8 43.0 41% NA NA 30.12 1020.0

Regional Weather Observation

CAIRO (KCIR)

Clear
59.4 F

CAPE GIRARDEAU (KCGI)

Clear
57.2 F

CARBONDALE/MURPH (KMDH)

Clear
59.0 F

MARION REGIONAL (KMWA)

Clear
57.2 F

SIKESTON (KSIK)

NULL
58.3 F

PERRYVILLE (KPCD)

Clear
58.1 F
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