5-day weather forecast for Chicago, Illinois

Click on a forecast to see the forecast trend for that day

Weather changeability for Chicago, Illinois

Temperature Last Month Last Year
Average change in high temperature day-to-day 4.7° 6.0°
Average change in low temperature day-to-day 8.0° 6.7°
Precipitation Last Month Last Year
Chance of dry day after a precip day 29% 52%
Chance of precip day after a dry day 56% 24%

Weather forecast accuracy for Chicago, Illinois

Last Month
NWS Digital Forecast   72.78%
World Weather Online   71.11%
The Weather Channel   70.83%
Weather Underground   69.54%
AccuWeather   67.22%
MeteoGroup   66.11%
Dark Sky (forecast.io)   65.00%
Foreca   62.50%
Persistence   40.83%
Last Year
Weather Underground   79.72%
The Weather Channel   79.55%
MeteoGroup   78.61%
Foreca   77.83%
AccuWeather   76.54%
NWS Digital Forecast   71.65%
Dark Sky (forecast.io)   69.71%
World Weather Online   58.49%
Persistence   45.87%

ForecastAdvisor Fact

66.7% of NWS Digital Forecast's low temperature forecasts for Chicago were within 3 degrees of actual temperatures last month.