| < October >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in Chicago/ 0’Hare, Il in October is quite mild at 11.6 °C (52.88 °F).
- Afternoons can be very mild with average high temperatures reaching 17.4 °C (63.3 °F).
- Overnight temperatures are generally cool with an average low of 5.7 °C (42.3 °F).
- The average daily temperature range/ variation in October is 11.7 °C (21.1 °F).
- The weather in October is marginally dry. Only 61.2mm (2.4in) of water is discharged.
- The shortest day is 10:19 long and the longest day is 11:41 long with an average length of 10:59.
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Weather Trend Graph for October in Chicago/ 0’Hare, Il, Usa
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