5-day weather forecast for Summit Argo, Illinois
Today
71°
89°
Chance Thunderstorms
Monday
68°
81°
Chance Thunderstorms
Tuesday
70°
82°
Partly Cloudy
Wednesday
70°
81°
Slight Chance Thunderstorms
Thursday
71°
84°
Slight Chance Thunderstorms
Click on a forecast to see the forecast trend for that day
Weather forecast accuracy for Chicago, Illinois
| Accuweather | 76.22% |
| MyForecast | 75.97% |
| The Weather Channel | 75.62% |
| NWS Digital Forecast | 72.83% |
| National Weather Service | 72.24% |
| Intellicast | 65.08% |
| The Weather Channel | 72.07% |
| Intellicast | 71.80% |
| National Weather Service | 70.94% |
| NWS Digital Forecast | 69.99% |
| MyForecast | 69.60% |
| Accuweather | 67.94% |
ForecastAdvisor Fact
17.8% of Intellicast's high temperature forecasts for Chicago were exactly right last month.