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Fast Facts:

  • Northern Illinois and northwest Indiana were at the northern end of a dome of heat, with highs on July 19-20 reaching into the mid 90s in most communities.
  • High moisture also moved into the area with dew points reaching 75° to 80°, which combined with the temperatures brought heat index values well over 100° during the two afternoons.
  • The humid air kept temperatures from dropping much at all at night, especially in the urban areas.
  • Rockford tied an all-time record for a daily minimum temperature, with a low only of 80° on July 19.  
Maximum Heat Indices and Temperatures During the Hot Stretch




Rockford Record

All-Time Record High Minimum Temperature Tied at Rockford, IL

Observation History at Rockford, IL


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Additional recaps can be found on the NWS Chicago Past Events Page
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