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 17°C (63°F). However, be prepared for a range of temperatures, as it can dip to a chilly 1°C (35°F) and peak at a warm 30°C (87°F). With an average precipitation of 90 mm (3.5 in) spread over 10 days, don't forget your umbrella! Additionally, the air is moderately humid, with an average humidity of 67%.

September Temperature in Sugar Grove

In September in Sugar Grove, the average temperature is 17°C (63°F). Maximum temperatures can reach up to 30°C (87°F), while minimum temperatures can drop as low as 1°C (35°F). This diverse temperature range makes Sugar Grove an ideal destination for travelers looking for both warm days and cool evenings.

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 17°C (63°F), with highs reaching up to 30°C (87°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec252834455765706862523731
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 precipitation amount is 90 mm (3.5 in) 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 90 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec10011210112713914013510690131116110
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 67%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket wrapping around you, making travel refreshing yet slightly muggy, as you navigate the sights with a pleasant, if slightly sticky, embrace.

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 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
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 is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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 Weather-4°C (25°F)100 mm (3.9 inches)89%moderate
February Weather-2°C (28°F)112 mm (4.4 inches)90%moderate
March Weather1°C (35°F)101 mm (4.0 inches)89%high
April Weather7°C (45°F)127 mm (5.0 inches)88%very high
May Weather14°C (57°F)139 mm (5.5 inches)80%very high
June Weather18°C (66°F)140 mm (5.5 inches)79%very high
July Weather21°C (70°F)135 mm (5.3 inches)74%very high
August Weather20°C (68°F)106 mm (4.2 inches)64%very high
September Weather17°C (63°F)90 mm (3.5 inches)67%very high
October Weather11°C (52°F)131 mm (5.2 inches)81%high
November Weather3°C (38°F)116 mm (4.6 inches)89%moderate
December Weather-1°C (31°F)110 mm (4.3 inches)88%low

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