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September Weather in Lunenburg, United States

Last updated: June 24, 2025

In September, the average temperature in Lunenburg, United States hovers at a pleasant 15°C (59°F). Temperatures can vary significantly, with a minimum drop to -5°C (23°F) and peaking at a warm 30°C (85°F). Expect an average of 64 mm (2.5 in) of precipitation over 9 days, accompanied by a humidity level of 77%, making for a cozy yet vibrant atmosphere.

September Temperature in Lunenburg

In September in Lunenburg, the average temperature is 15°C (59°F). Maximums can reach 30°C (85°F) and minimums can be as low as -5°C (23°F). This temperature range makes Lunenburg an ideal destination for travelers seeking a mix of warm days and cooler nights.

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 15°C (59°F), with highs reaching up to 30°C (85°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec172027415362676658473222
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 64 mm (2.5 in) over a span of 9 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 64 mm (2.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec8683731179999105886413711093
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 77%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it essential to stay hydrated and choose light, breathable clothing for comfortable travel.

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 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997532
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 Weather-8°C (17°F)86 mm (3.4 inches)91%low
February Weather-7°C (20°F)83 mm (3.3 inches)89%moderate
March Weather-3°C (28°F)73 mm (2.9 inches)85%high
April Weather5°C (41°F)117 mm (4.6 inches)84%very high
May Weather12°C (54°F)99 mm (3.9 inches)78%very high
June Weather17°C (62°F)99 mm (3.9 inches)72%very high
July Weather20°C (68°F)105 mm (4.1 inches)75%very high
August Weather19°C (66°F)88 mm (3.5 inches)74%very high
September Weather15°C (59°F)64 mm (2.5 inches)77%high
October Weather8°C (47°F)137 mm (5.4 inches)85%moderate
November Weather0°C (32°F)110 mm (4.3 inches)86%moderate
December Weather-6°C (22°F)93 mm (3.7 inches)85%low

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