Cortland, Illinois Weather
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Weather Forecast for Cortland, Illinois : DeKalb County
Issued: 4:26 am CDT Jun 2, 2025 Latitude: 41.9200288 Longitude: -88.6886963 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Sunny on This Afternoon Cloudy on Tonight 50% chance of thunderstorms on Tuesday 70% chance of thunderstorms on Wednesday 20% chance of on Thursday 20% chance of rain on Friday Mostly Sunny on Saturday 20% chance of on Sunday
High: 84°F Low: 65°F High: 84°F High: 67°F High: 74°F High: 75°F High: 76°F High: 79°F
Low: 61°F Low: 54°F Low: 56°F Low: 55°F Low: 56°F  
Mostly Sunny Cloudy Thunderstorms Thunderstorms Partly Sunny Rain Mostly Sunny Partly Sunny
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Current Conditions at
DE KALB TAYLOR MUNICIPAL - (KDKB)
79°
Clear
as of 12:55 PM CDST
Rel. Humidity: 34%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 17 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
AURORA - (KARR)
81°
Clear
as of 12:52 PM CDST
Rel. Humidity: 30%
Dew Point: 46°F
Visibility: 9 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
8 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
ROCHELLE MUNICIPAL ARPT - (KRPJ)
81°
Clear
as of 12:55 PM CDST
Rel. Humidity: 21%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
16 MPH
Gust: 22 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
WEST CHICAGO - (KDPA)
79°
Clear
as of 12:52 PM CDST
Rel. Humidity: 31%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
9 MPH
190° South
Cloud Level(s): Clear
Mostly Sunny on This Afternoon This Afternoon... Mostly sunny, with a high near 84. South southwest wind around 15 mph, with gusts as high as 20 mph.
Cloudy on Tonight Tonight... Partly cloudy, with a low around 65. South wind 10 to 15 mph.
50% chance of thunderstorms Tuesday Tuesday... A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph.
90% chance of thunderstorms Tuesday Night Tuesday Night... Showers and possibly a thunderstorm. Low around 61. South southwest wind 10 to 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
70% chance of thunderstorms Wednesday Wednesday... Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 67. North northeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%.
40% chance of rain Wednesday Night Wednesday Night... A 40 percent chance of showers. Partly cloudy, with a low around 54.
20% chance of Thursday Thursday... A 20 percent chance of showers. Partly sunny, with a high near 74.
20% chance of rain Thursday Night Thursday Night... A chance of showers. Mostly cloudy, with a low around 56.
20% chance of rain Friday Friday... A chance of showers. Mostly sunny, with a high near 75.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 55.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 76.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 56.
20% chance of Sunday Sunday... A chance of showers. Partly sunny, with a high near 79.
Current Radar Image


Sun Almanac for Cortland, Illinois
Sunrise: 05:21 AM
Sunset: 8:24 PM
Civil Sunrise:04:48 AM
Civil Sunset: 8:58 PM
Nautical Sunrise: 04:05 AM
Nautical Sunset: 9:41 PM
Astro Sunrise: 03:14 AM
Astro Sunset: 10:32 PM
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