| < May >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in Walnut, Il in May is very mild at 16.1 °C (60.98 °F).
- Afternoons can be really warm with average high temperatures reaching 22.4 °C (72.3 °F).
- Overnight temperatures are generally a little cool with an average low of 9.7 °C (49.5 °F).
- The variation/ range of diurnal average temperatures in May is 12.7 °C (22.9 °F).
- The weather in May is not exactly parched. Circa 101.6mm (4in) of H2O is dropped.
- The shortest day is 14:00 long and the longest day is 14:59 long with an average length of 14:32.
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Weather Trend Graph for May in Walnut, Il, Usa
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