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September Weather in Norfolk County, Canada

Last updated: June 18, 2025

In September, the average temperature in Norfolk County, Canada hovers around 19°C (66°F), with minimums dropping to 6°C (43°F) and maximums reaching up to 29°C (85°F). Expect about 80 mm (3.1 in) of precipitation over 10 days, contributing to an average humidity of 81%. 🌦️

September Temperature in Norfolk County

In September in Norfolk County, the average temperature is 19°C (66°F). The maximum can reach 29°C (85°F) and the minimum can be as low as 6°C (43°F). It's a great time to explore the outdoors while enjoying mild weather.

September Weather in Norfolk County: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Norfolk County, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Norfolk County, 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 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec272734435566727165554133
Data source: Temperature data for Norfolk County 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 Norfolk County

In Norfolk County in September, the total precipitation amount is 80 mm (3.1 in) over a period of 10 days.

September Precipitation Trends in Norfolk County

The chart displays monthly precipitation patterns in Norfolk County, 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 Norfolk County, September typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec788183106105889492801189288
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Norfolk County

In Norfolk County in September, humidity is 81%. With an average temperature of 19°C (66°F), this humidity feels like a warm, heavy blanket enveloping you, making travel feel both muggy and slightly stifling, often leading to a need for frequent breaks in the shade.

September Average Humidity in Norfolk County

This chart illustrates the average monthly humidity levels in Norfolk County, 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 Norfolk County is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%88%87%83%81%79%80%81%84%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Norfolk County

In Norfolk County 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 Norfolk County.

Maximum UV Index Levels in Norfolk County for September

The chart shows the monthly maximum UV Index (UVI) for Norfolk County 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 Norfolk County typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3458910998642
Data source: Norfolk County 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 Norfolk County Compares to Other Months

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

This table compares monthly weather conditions in Norfolk County, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)78 mm (3.1 inches)90%moderate
February Weather-3°C (28°F)81 mm (3.2 inches)90%moderate
March Weather1°C (34°F)83 mm (3.3 inches)87%moderate
April Weather6°C (43°F)106 mm (4.2 inches)87%very high
May Weather13°C (55°F)105 mm (4.1 inches)82%very high
June Weather19°C (66°F)88 mm (3.5 inches)81%very high
July Weather22°C (73°F)94 mm (3.7 inches)79%very high
August Weather22°C (72°F)92 mm (3.6 inches)80%very high
September Weather19°C (66°F)80 mm (3.1 inches)81%very high
October Weather13°C (55°F)118 mm (4.6 inches)84%high
November Weather5°C (41°F)92 mm (3.6 inches)88%moderate
December Weather1°C (34°F)88 mm (3.5 inches)87%low

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