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September Weather in Sugar Grove, United States

Last updated: June 24, 2025

In September, the average temperature in Sugar Grove, United States is a pleasant 19°C (66°F), with temperatures ranging from a cool 2°C (37°F) to a warm 29°C (85°F). Expect some rain, as the region experiences approximately 102 mm (4.0 in) of precipitation over 10 days. Additionally, the average humidity level hovers around a comfortable 68%, creating a moderately tropical atmosphere.

September Temperature in Sugar Grove

In September in Sugar Grove, the average temperature is 19°C (66°F). Maximums can reach 29°C (85°F) and minimums can be as low as 2°C (37°F). This range makes it a great time to explore the outdoors, so pack accordingly for both warm and cooler conditions.

September Weather in Sugar Grove: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sugar Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sugar Grove, September typically has an average temperature of 19°C (66°F), with highs reaching up to 29°C (85°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec344045526167716965564239
Data source: Temperature data for Sugar Grove 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 Sugar Grove

In Sugar Grove in September, the total precipitation amount is 102 mm (4.0 in) falling over the course of 10 days.

September Precipitation Trends in Sugar Grove

The chart displays monthly precipitation patterns in Sugar Grove, 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 Sugar Grove, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec85126112131119111789610211669103
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sugar Grove

In Sugar Grove in September humidity is 68%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, creating a sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Sugar Grove

This chart illustrates the average monthly humidity levels in Sugar Grove, 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 Sugar Grove is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sugar Grove

In Sugar Grove in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Sugar Grove.

Maximum UV Index Levels in Sugar Grove for September

The chart shows the monthly maximum UV Index (UVI) for Sugar Grove 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 Sugar Grove typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111111111010853
Data source: Sugar Grove 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 Sugar Grove Compares to Other Months

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

This table compares monthly weather conditions in Sugar Grove, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)85 mm (3.4 inches)87%moderate
February Weather4°C (40°F)126 mm (5.0 inches)87%high
March Weather7°C (45°F)112 mm (4.4 inches)86%very high
April Weather11°C (52°F)131 mm (5.2 inches)84%extreme
May Weather16°C (61°F)119 mm (4.7 inches)83%extreme
June Weather19°C (67°F)111 mm (4.4 inches)83%extreme
July Weather22°C (71°F)78 mm (3.1 inches)79%extreme
August Weather21°C (70°F)96 mm (3.8 inches)66%very high
September Weather19°C (66°F)102 mm (4.0 inches)68%very high
October Weather13°C (56°F)116 mm (4.6 inches)78%very high
November Weather6°C (43°F)69 mm (2.7 inches)89%moderate
December Weather4°C (39°F)103 mm (4.1 inches)86%moderate

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