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September Weather in Aberdeen, United States

Last updated: June 24, 2025

In Aberdeen, United States, the average temperature for September hovers around 18°C (64°F), with the minimum dipping to a chilly 1°C (34°F) and the maximum soaring to a toasty 37°C (99°F). Expect about 22 mm (0.9 in) of precipitation over 3 days and enjoy a moderate average humidity of 46%.

September Temperature in Aberdeen

In September in Aberdeen, the average temperature is 18°C (64°F). Maximums can reach 37°C (99°F), and minimums can be as low as 1°C (34°F). This means you'll want to pack for a variety of weather conditions while enjoying your travels.

September Weather in Aberdeen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Aberdeen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aberdeen, September typically has an average temperature of 18°C (64°F), with highs reaching up to 37°C (99°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec263040475768777464473828
Data source: Temperature data for Aberdeen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Aberdeen

In Aberdeen in September, the precipitation amount is 22 mm (0.9 in) over a span of 3 days.

September Precipitation Trends in Aberdeen

The chart displays monthly precipitation patterns in Aberdeen, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Aberdeen, September typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec394945424521101122312638
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Aberdeen

In Aberdeen in September humidity is 46%. With an average temperature of 18°C (64°F), this humidity feels like a pleasant and comfortable experience for traveling, allowing for enjoyable outdoor activities without feeling overly sticky or oppressive.

September Average Humidity in Aberdeen

This chart illustrates the average monthly humidity levels in Aberdeen, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Aberdeen is approximately 46%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%92%85%76%66%62%53%42%46%64%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Aberdeen

In Aberdeen in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Aberdeen.

Maximum UV Index Levels in Aberdeen for September

The chart shows the monthly maximum UV Index (UVI) for Aberdeen in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Aberdeen typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101111109643
Data source: Aberdeen September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Aberdeen Compares to Other Months

Weather in Aberdeen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Aberdeen, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Aberdeen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)39 mm (1.5 inches)91%moderate
February Weather-1°C (30°F)49 mm (1.9 inches)92%moderate
March Weather4°C (40°F)45 mm (1.8 inches)85%high
April Weather8°C (47°F)42 mm (1.7 inches)76%very high
May Weather14°C (57°F)45 mm (1.8 inches)66%very high
June Weather20°C (68°F)21 mm (0.8 inches)62%extreme
July Weather25°C (77°F)10 mm (0.4 inches)53%extreme
August Weather23°C (74°F)11 mm (0.4 inches)42%very high
September Weather18°C (64°F)22 mm (0.9 inches)46%very high
October Weather8°C (48°F)31 mm (1.2 inches)64%high
November Weather3°C (38°F)26 mm (1.0 inches)83%moderate
December Weather-2°C (28°F)38 mm (1.5 inches)87%moderate

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