| < 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 Amherst, Ma in September is very mild at 16.9 °C (62.42 °F).
- Afternoons can be fairly hot with average high temperatures reaching 24.3 °C (75.7 °F).
- Overnight temperatures are generally a little cool with an average low of 9.4 °C (48.9 °F).
- In September the variation/ range of diurnal average temperatures is 14.9 °C (26.8 °F).
- The weather in September is dryish. Just 86.9mm (3.4in) of H2O is discharged.
- The shortest day is 11:44 long and the longest day is 13:07 long with an average length of 12:26.
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Weather Trend Graph for September in Amherst, Ma, Usa
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