Weather Tornado Watch in effect until 10:00 PM CDT. Source: U.S. National Weather ServiceScroll RightNow5:25 pm CDT61° 5:25 pmRealFeel® 56°Mostly cloudyOttawa, IL°F°CGet this widgetTodayMar 31Hi 68°RealFeel® 66°Severe afternoon t-stormsDay Details >TonightMar 31Lo 39°RealFeel® 23°A severe evening thunderstormDay Details >TomorrowApr 1Hi 47°RealFeel® 39°Showers of rain and snowDay Details > Rain starting in 72 min MinuteCast® for Ottawa Thunderstorms, some severe, this afternoon through this evening Hourly3/31Now: 5:25 pm5pmThunderstorms63° 53%6pmThunderstorms63° 60%7pmCloudy63° 49%8pmThunderstorms62° 65%9pmCloudy60° 49%10pmCloudy57° 44%Hourly Forecast >Video Weather Forecastmore Weather Videos > Ottawa Radar