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September Weather in Norfolk, United States

Last updated: June 24, 2025

In September, the average temperature in Norfolk, United States hovers around 19°C (67°F). Expect a range that can dip as low as 4°C (40°F) and soar up to 35°C (95°F). Be prepared for some rain, with 94 mm (3.7 in) of precipitation spread across 8 days. With an average humidity of 75%, you'll definitely feel the moisture in the air!

September Temperature in Norfolk

In September in Norfolk, the average temperature is 19°C (67°F), with maximums reaching up to 35°C (95°F) and minimums dipping as low as 4°C (40°F). Be sure to pack layers to accommodate the temperature variations while traveling!

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

The chart illustrates September temperature patterns in Norfolk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Norfolk, September typically has an average temperature of 19°C (67°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec323439485968747366564335
Data source: Temperature data for Norfolk 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

In Norfolk in September, the precipitation amount is 94 mm (3.7 in) over the course of 8 days.

September Precipitation Trends in Norfolk

The chart displays monthly precipitation patterns in Norfolk, 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, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec738698126100105139939414298117
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Norfolk

In Norfolk in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

September Average Humidity in Norfolk

This chart illustrates the average monthly humidity levels in Norfolk, 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 is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Norfolk

In Norfolk 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 Norfolk.

Maximum UV Index Levels in Norfolk for September

The chart shows the monthly maximum UV Index (UVI) for Norfolk 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 typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356899997642
Data source: Norfolk 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 Compares to Other Months

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

This table compares monthly weather conditions in Norfolk, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)73 mm (2.9 inches)84%moderate
February Weather1°C (34°F)86 mm (3.4 inches)84%moderate
March Weather4°C (39°F)98 mm (3.9 inches)82%high
April Weather9°C (49°F)126 mm (5.0 inches)79%very high
May Weather15°C (59°F)100 mm (3.9 inches)75%very high
June Weather20°C (69°F)104 mm (4.1 inches)78%very high
July Weather23°C (74°F)139 mm (5.5 inches)76%very high
August Weather23°C (74°F)93 mm (3.7 inches)76%very high
September Weather19°C (67°F)94 mm (3.7 inches)75%high
October Weather13°C (56°F)142 mm (5.6 inches)75%high
November Weather6°C (43°F)98 mm (3.9 inches)80%moderate
December Weather1°C (35°F)117 mm (4.6 inches)80%low

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