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September Weather in Lunenburg, United States

Last updated: June 24, 2025

In September, the average temperature in Lunenburg, United States is a comfortable 23°C (73°F). However, temperatures can fluctuate, with a minimum of 7°C (46°F) and a maximum soaring up to 37°C (98°F). Expect a moderate amount of precipitation, averaging 101 mm (4.0 in) over about 10 days, with the humidity hovering around 75%.

September Temperature in Lunenburg

In September in Lunenburg, the average temperature is 23°C (73°F). Maximum temperatures can reach 37°C (98°F), while minimums can drop as low as 7°C (46°F). This makes Lunenburg a great destination for travelers looking for mild to warm weather with a chance of cooler evenings.

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

The chart illustrates September temperature patterns in Lunenburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lunenburg, September typically has an average temperature of 23°C (73°F), with highs reaching up to 37°C (98°F) and lows dropping to around 7°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec414651606975817873645044
Data source: Temperature data for Lunenburg 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 Lunenburg

In Lunenburg in September, the precipitation amount is 101 mm (4.0 in) spread over the course of 10 days.

September Precipitation Trends in Lunenburg

The chart displays monthly precipitation patterns in Lunenburg, 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 Lunenburg, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7210274109111114811321011197895
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lunenburg

In Lunenburg in September, humidity is 75%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel slightly uncomfortable yet invigorating as the air wraps around you, creating a sense of walking through a lush, tropical paradise.

September Average Humidity in Lunenburg

This chart illustrates the average monthly humidity levels in Lunenburg, 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 Lunenburg is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%84%82%83%83%79%77%75%81%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lunenburg

In Lunenburg 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 Lunenburg.

Maximum UV Index Levels in Lunenburg for September

The chart shows the monthly maximum UV Index (UVI) for Lunenburg 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 Lunenburg typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679111010109753
Data source: Lunenburg 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 Lunenburg Compares to Other Months

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

This table compares monthly weather conditions in Lunenburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)72 mm (2.8 inches)84%moderate
February Weather8°C (46°F)102 mm (4.0 inches)84%high
March Weather10°C (51°F)74 mm (2.9 inches)84%high
April Weather16°C (60°F)108 mm (4.3 inches)82%very high
May Weather20°C (69°F)111 mm (4.4 inches)82%extreme
June Weather24°C (76°F)114 mm (4.5 inches)83%very high
July Weather27°C (81°F)81 mm (3.2 inches)79%very high
August Weather26°C (78°F)131 mm (5.2 inches)77%very high
September Weather23°C (73°F)101 mm (4.0 inches)75%very high
October Weather18°C (64°F)119 mm (4.7 inches)81%high
November Weather10°C (50°F)78 mm (3.1 inches)87%moderate
December Weather7°C (45°F)95 mm (3.7 inches)85%moderate

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