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September Weather in Concord, United States

Last updated: June 24, 2025

In September, the average temperature in Concord, United States hovers around 19°C (66°F), with a minimum dipping to 2°C (36°F) and a maximum soaring to 33°C (92°F). Expect a precipitation of about 91 mm (3.6 in) over 10 days, contributing to a relatively high average humidity of 80%. Prepare for a month of varied weather!

September Temperature in Concord

In September in Concord, the average temperature is 19°C (66°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 2°C (36°F). This diverse climate makes Concord an ideal destination for travelers looking to experience a range of temperatures and activities.

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

The chart illustrates September temperature patterns in Concord, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Concord, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec262737476070747265533932
Data source: Temperature data for Concord 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 Concord

In Concord in September, the precipitation amount totals 91 mm (3.6 in) over a span of 10 days.

September Precipitation Trends in Concord

The chart displays monthly precipitation patterns in Concord, 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 Concord, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec687280901319611170911147458
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Concord

In Concord in September humidity is 80%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel more strenuous and sticky, which can ultimately dampen the experience of traveling.

September Average Humidity in Concord

This chart illustrates the average monthly humidity levels in Concord, 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 Concord is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Concord

In Concord 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 Concord.

Maximum UV Index Levels in Concord for September

The chart shows the monthly maximum UV Index (UVI) for Concord 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 Concord typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097542
Data source: Concord 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 Concord Compares to Other Months

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

This table compares monthly weather conditions in Concord, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)68 mm (2.7 inches)88%low
February Weather-3°C (28°F)72 mm (2.9 inches)87%moderate
March Weather3°C (38°F)80 mm (3.1 inches)85%moderate
April Weather8°C (47°F)90 mm (3.6 inches)86%very high
May Weather16°C (60°F)131 mm (5.2 inches)80%very high
June Weather21°C (70°F)96 mm (3.8 inches)80%very high
July Weather24°C (75°F)111 mm (4.4 inches)80%very high
August Weather22°C (72°F)70 mm (2.8 inches)80%very high
September Weather19°C (66°F)91 mm (3.6 inches)80%high
October Weather12°C (54°F)114 mm (4.5 inches)84%moderate
November Weather4°C (39°F)74 mm (2.9 inches)89%moderate
December Weather0°C (33°F)58 mm (2.3 inches)86%low

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