High 44F. Winds WNW at 5 to 10 mph. Winds NNW at 5 to 10 mph. no moonlight, or other lights). Please select the information that is incorrect. Chicago Weather Forecasts. We recognize our responsibility to use data and technology for good. The time of Actual Sunset minus the time of Actual Sunrise. Cloudy. Everything you need to be ready to step out prepared. The horizon is well defined and the outline of objects might be visible without artificial light. We will review the data in question. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! Today's temperature is forecast to be COOLER than yesterday. Thank you for reporting this station. Get the forecast for today, tonight & tomorrow's weather for Chicago, IL. The horizon should be clearly defined and the brightest stars should be visible under good atmospheric conditions (i.e. Ordinary outdoor activities are not possible at this time without extra illumination. The change in length of daylight between today and tomorrow is also listed when available. © Copyright TWC Product and Technology LLC 2014, 2020. Cloudy. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Chicago area. One still should be able to carry on ordinary outdoor activities. In the beginning of morning astronomical twilight and at the end of astronomical twilight in the evening, sky illumination is very faint, and might be undetectable. Get the Chicago, IL local hourly forecast including temperature, RealFeel, and chance of precipitation. The time of Civil Sunset minus the time of Civil Sunrise. Low 34F. Cloudy skies early, then partly cloudy in the afternoon. access_time 2:22 PM CDT on October 26, 2020 (GMT -5) | Updated 43 seconds ago. You are about to report this weather station for bad data. The time period when the sun is between 12 and 18 degrees below the horizon at either sunrise or sunset. Be prepared with the most accurate 10-day forecast for Chicago, IL with highs, lows, chance of precipitation from The Weather Channel and Weather.com The time period when the sun is between 6 and 12 degrees below the horizon at either sunrise or sunset. Take control of your data. Winds NNW at 10 to 15 mph. Slight chance of a rain shower. The sun does not contribute to the illumination of the sky before this time in the morning, or after this time in the evening. High 41F. Today’s and tonight’s Chicago, IL weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.com The time period when the sun is no more than 6 degrees below the horizon at either sunrise or sunset.