How is the weather in Cornwall, IL?

At 9:29 PM on Sat, Sep 20, 2025 it is 67 degrees Fahrenheit, feeling like 67 degrees.

Cornwall, IL Weather Forecast and Current Conditions

67°F
Feels Like 67°F

Humidity 90% Dew Point 64°F Wind Calm 0 MPH Barometer 29.9 in.759.5 mm

Solar Rad 0 w/m2 UV Index 0

Report from 5.5 miles ESE of central Cornwall at 9:29 PM Sat, Sep 20, 2025

Current Weather

67°F
Feels Like 67°F

Humidity 90% Dew Point 64°F Wind Calm 0 MPH Barometer 29.9 in.759.5 mm

Solar Rad 0 w/m2 UV Index 0

Report from 5.5 miles ESE of central Cornwall at 9:29 PM Sat, Sep 20, 2025

Forecast at a Glance

SatSep 20

40%

63°

SunSep 21

20%

80°

62°

MonSep 22

50%

80°

63°

TueSep 23

40%

79°

60°

WedSep 24

30%

75°

58°

ThuSep 25

30%

73°

54°

FriSep 26

20%

76°

54°

This Date in Weather History

1967 - Hurricane Beulah moved into South Texas, and torrential rains from the hurricane turned the rich agricultural areas of South Texas into a large lake. Hurricane Beulah also spawned a record 115 tornadoes.

Cornwall 7 Day Weather Forecast Details

Saturday Sep 20

Night: A chance of showers and thunderstorms before 3am, then patchy fog and a chance of showers and thunderstorms between 3am and 4am, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East wind around 5 mph. Chance of precipitation is 40%.

Sunday Sep 21

Day: Patchy fog and a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

Night: A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Southwest wind 0 to 5 mph. Chance of precipitation is 50%.

Monday Sep 22

Day: A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. South wind around 5 mph. Chance of precipitation is 50%.

Night: A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.

Tuesday Sep 23

Day: A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 40%.

Night: A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.

Wednesday Sep 24

Day: A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.

Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

Thursday Sep 25

Day: A chance of showers and thunderstorms. Mostly sunny, with a high near 73. Chance of precipitation is 30%.

Night: A chance of rain showers. Partly cloudy, with a low around 54. Chance of precipitation is 30%.

Friday Sep 26

Day: A slight chance of rain showers. Mostly sunny, with a high near 76.

Night: A slight chance of rain showers before 7pm. Mostly clear, with a low around 54.

Saturday Sep 27

Day: Sunny, with a high near 77.

Sun & Moon Monthly

First Light 6:19 AM

Sunrise 6:46 AM

Sunset 7:02 PM

Last Light 7:30 PM

Moonrise 5:34 AM

Moonset 6:38 PM

Moon Phase

Local Parks Weather - Plan Ahead to Enjoy Your Day

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Contiguous United States Extremes

Sat's High Temperature
105 at 4 Miles South Of Tolleson, AZ

Sat's Low Temperature
24 at 14 Miles West Southwest Of Mackay, ID

Weather Folklore

Closed is the pinkeyed pimpernel before rain.

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