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September Weather in Guilford, United States

Last updated: June 24, 2025

The average temperature in Guilford, United States during September is a pleasant 20°C (69°F). However, temperatures can vary significantly, with a minimum of 3°C (38°F) and a maximum of 34°C (93°F). Expect around 126 mm (5.0 in) of precipitation over 9 days, and enjoy an average humidity level of 68%.

September Temperature in Guilford

In September in Guilford, the average temperature is 20°C (69°F). Maximum temperatures can reach 34°C (93°F), while minimum temperatures can drop to as low as 3°C (38°F). Overall, this month offers a pleasant range of temperatures, making it a wonderful time for outdoor activities and exploration in Guilford.

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

The chart illustrates September temperature patterns in Guilford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guilford, September typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec333642526371777568584337
Data source: Temperature data for Guilford 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 Guilford

In Guilford in September, the precipitation amount is 126 mm (5.0 in) spread over 9 days.

September Precipitation Trends in Guilford

The chart displays monthly precipitation patterns in Guilford, 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 Guilford, September typically receives around 126 mm (5.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec6310193106124951361001261078492
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Guilford

In Guilford in September, humidity is 68%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making outdoor exploration both refreshing and slightly sticky, requiring occasional breaks in the shade to stay comfortable while traveling.

September Average Humidity in Guilford

This chart illustrates the average monthly humidity levels in Guilford, 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 Guilford is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Guilford

In Guilford 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 Guilford.

Maximum UV Index Levels in Guilford for September

The chart shows the monthly maximum UV Index (UVI) for Guilford 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 Guilford typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098642
Data source: Guilford 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 Guilford Compares to Other Months

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

This table compares monthly weather conditions in Guilford, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)63 mm (2.5 inches)86%moderate
February Weather2°C (36°F)101 mm (4.0 inches)86%moderate
March Weather6°C (42°F)93 mm (3.7 inches)86%high
April Weather11°C (53°F)106 mm (4.2 inches)84%very high
May Weather17°C (63°F)124 mm (4.9 inches)78%very high
June Weather22°C (72°F)95 mm (3.7 inches)79%very high
July Weather25°C (77°F)136 mm (5.4 inches)70%very high
August Weather24°C (75°F)100 mm (3.9 inches)59%very high
September Weather20°C (69°F)126 mm (5.0 inches)68%very high
October Weather14°C (58°F)107 mm (4.2 inches)80%high
November Weather6°C (43°F)84 mm (3.3 inches)86%moderate
December Weather3°C (37°F)92 mm (3.6 inches)85%low

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