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September Weather in Chaumont, United States

Last updated: June 24, 2025

In September, the average temperature in Chaumont, United States hovers around 18°C (65°F), with a comfortable range that can dip to a low of 6°C (44°F) and peak at 28°C (83°F). Expect about 80 mm (3.2 in) of precipitation spread across 9 days, contributing to an average humidity of 78%. Prepare for a pleasantly humid experience as you explore this charming destination!

September Temperature in Chaumont

In September in Chaumont, the average temperature is 18°C (65°F), with maximums reaching up to 28°C (83°F) and minimums dropping as low as 6°C (44°F). This mild and variable weather makes Chaumont an ideal destination for travelers seeking both comfort and adventure.

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

The chart illustrates September temperature patterns in Chaumont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chaumont, September typically has an average temperature of 18°C (65°F), with highs reaching up to 28°C (83°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec252732425364727165544132
Data source: Temperature data for Chaumont 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 Chaumont

In Chaumont in September, the total precipitation amount is 80 mm (3.2 in) over the course of 9 days.

September Precipitation Trends in Chaumont

The chart displays monthly precipitation patterns in Chaumont, 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 Chaumont, September typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec929086127103891359780164130115
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Chaumont

In Chaumont in September, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

September Average Humidity in Chaumont

This chart illustrates the average monthly humidity levels in Chaumont, 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 Chaumont is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Chaumont

In Chaumont 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 Chaumont.

Maximum UV Index Levels in Chaumont for September

The chart shows the monthly maximum UV Index (UVI) for Chaumont 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 Chaumont typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Chaumont 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 Chaumont Compares to Other Months

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

This table compares monthly weather conditions in Chaumont, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)92 mm (3.6 inches)90%low
February Weather-3°C (27°F)89 mm (3.5 inches)90%moderate
March Weather0°C (32°F)86 mm (3.4 inches)87%moderate
April Weather6°C (42°F)127 mm (5.0 inches)88%very high
May Weather12°C (54°F)103 mm (4.1 inches)82%very high
June Weather18°C (64°F)88 mm (3.5 inches)79%very high
July Weather22°C (72°F)135 mm (5.3 inches)78%very high
August Weather22°C (72°F)97 mm (3.8 inches)76%very high
September Weather18°C (65°F)80 mm (3.2 inches)78%high
October Weather12°C (54°F)164 mm (6.5 inches)84%moderate
November Weather5°C (41°F)130 mm (5.1 inches)89%moderate
December Weather0°C (32°F)115 mm (4.5 inches)86%low

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