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New official low temperature for Illinois for January: -38 F at Mt. Carroll
Link to tweet
An Arctic outbreak in late January 2019 led to widespread bitterly cold temperatures across much of the
Upper Midwest. The following observation was examined by the State Climate Extremes Committee
(SCEC) to determine its validity and potential status of the lowest temperature directly observed at a
weather station in Illinois:
• Location: Mt. Carroll, Illinois
• Date: 31 January 2019
• Value: -38°F
After considering the observation and various surrounding factors, the SCEC determined the Mt. Carroll
observation to be valid, and it now stands as the record minimum temperature for Illinois. This value
supersedes the previous record of -36°F occurring 5 January 1999 near Congerville.
Upper Midwest. The following observation was examined by the State Climate Extremes Committee
(SCEC) to determine its validity and potential status of the lowest temperature directly observed at a
weather station in Illinois:
• Location: Mt. Carroll, Illinois
• Date: 31 January 2019
• Value: -38°F
After considering the observation and various surrounding factors, the SCEC determined the Mt. Carroll
observation to be valid, and it now stands as the record minimum temperature for Illinois. This value
supersedes the previous record of -36°F occurring 5 January 1999 near Congerville.
https://www.ncdc.noaa.gov/monitoring-content/extremes/scec/reports/20190305-Illinois-Minimum-Temperature.pdf