| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in Monmouth, Il in September is somewhat warm at 18.6 °C (65.48 °F).
- Afternoons can be fairly hot with average high temperatures reaching 25.2 °C (77.4 °F).
- Overnight temperatures are generally quite mild with an average low of 12 °C (53.6 °F).
- In September there is a variation/ range of daily average temperatures of 13.2 °C (23.8 °F).
- The weather in September is not exactly parched. Circa 101.3mm (4in) of water is transfered.
- The shortest day is 11:45 long and the longest day is 13:05 long with an average length of 12:25.
Check the distance to and compare the Monmouth, Il September averages with somewhere beginning with:
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Weather Trend Graph for September in Monmouth, Il, Usa
Navigate to September Weather in Locations Surrounding Monmouth, Il:
- Washington, Ia, Usa - 83.9 kms (52.1 miles) W
- Fairfield, Ia, Usa - 83.9 kms (52.1 miles) W
- Mount Pleasant, Ia, Usa - 43.2 kms (26.8 miles) W
- Burlington, Iowa, Usa - 26 kms (16.2 miles) SSW
- Rushville, Il, Usa - 111.2 kms (69.1 miles) S