Illinois State Water Survey - University of Illinois at Urbana-Champaign
State Climatologist Office for Illinois
Current Climate Conditions in Illinois
Dr. Jim Angel, State Climatologist
Maps of current climate conditions in Illinois of precipitation, mean temperature, maximum temperature, minimum temperature, and snowfall for selected time periods. These are typically updated by 11 am each day. Additional maps for the Midwest are available on the right from the Applied Climate Information System (ACIS).
Precipitation
This Month (actual, departure, percent) - Click to enlarge.
Last 7 Days (actual, departure, percent)
Last 30 Days (actual, departure, percent)
Last 90 Days (actual, departure, percent)
Year to Date (actual, departure, percent)
Mean Temperature
This Month (actual, departure)
Last 7 Days (actual, departure)
Last 30 Days (actual, departure)
Last 90 Days (actual, departure)
Year to Date (actual, departure)
Maximum Temperature
This Month (actual, departure)
Last 7 Days (actual, departure)
Last 30 Days (actual, departure)
Last 90 Days (actual, departure)
Year to Date (actual, departure)
Minimum Temperature
This Month (actual, departure)
Last 7 Days (actual, departure)
Last 30 Days (actual, departure)
Last 90 Days (actual, departure)
Year to Date (actual, departure)
Snowfall
This Month (actual, departure, percent) - Click to enlarge.
Last 7 Days (actual, departure, percent)
Last 30 Days (actual, departure, percent)
Last 90 Days (actual, departure, percent)
Year to Date (actual, departure, percent)
Comments
The snowfall year-to-date starts on September 1. Sometimes the daily updates of these maps fail. In which case the maps for the Midwest from the Applied Climate Information System (ACIS), mentioned above, are a possible substitute.
The data used in these products come from the National Weather Service (NWS) Cooperative Observer Program (COOP). This network of more than 11,000 volunteer observers nationwide, using approved instruments and observing techniques, provides high-quality climate data to the nation. The data are archived at the National Climatic Data Center (NCDC).
For other detailed precipitation reports of Illinois (rain, snow, and hail), visit the rapidly expanding Community Collaborative Rain, Hail, and Snow network (CoCoRaHS).