DeKalb, IL Weather Forecast
DeKalb County, Illinois
Live radar, warnings and storm tracking for DeKalb, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for DeKalb
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
DeKalb, IL at a glance
DeKalb is home to about 40,211 people in DeKalb County, across 17 square miles. It ranks 40th by population of 441 places in Illinois with a forecast here. The nearest neighbour with its own forecast is Cortland, 3 miles away.
- County
- DeKalb County
- Population
- 40,211 2023 est.
- Land area
- 17 sq mi
- People per sq mi
- 2,320
- Forecast point
- 41.9289°N, 88.7464°W
How well can the network see DeKalb?
The nearest Doppler radar is KLOT (Chicago, IL), to the ESE. Its lowest scan passes about 2,700 ft above DeKalb. Close enough to see rotation in the low part of a storm, where tornadoes form. DeKalb is closer to its radar than 55% of US cities.
The closest weather station is KDKB (DeKalb/Taylor Muni). Close enough that its readings are the conditions in town.
Forecasts near DeKalb
- Cortland, IL3 mi
- Sycamore, IL6 mi
- Genoa, IL12 mi
- Elburn, IL15 mi
- Rochelle, IL16 mi
- Campton Hills, IL17 mi
- Hampshire, IL18 mi
- Sugar Grove, IL19 mi
Elsewhere in Illinois
ChicagoAuroraJolietNapervilleRockfordElginAll Illinois forecasts →