| < 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 Bialystok in September is quite mild at 12 °C (53.6 °F).
- Afternoons can be very mild with average high temperatures reaching 17.4 °C (63.3 °F).
- Overnight temperatures are generally a little cool with an average low of 7.6 °C (45.7 °F).
- The variation/ range of daily average temperatures in September is 9.8 °C (17.6 °F).
- The weather in September is slightly dry. Only 52mm (2in) of H2O descends.
- The shortest day is 11:36 long and the longest day is 13:40 long with an average length of 12:38.
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Weather Trend Graph for September in Bialystok, Poland
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