nomadseason

September Weather in Culpeper, United States

Last updated: June 24, 2025

In September, the average temperature in Culpeper, United States is a pleasant 22°C (71°F). However, temperatures can vary with a minimum of 4°C (40°F) and a maximum soaring up to 37°C (98°F). Expect approximately 102 mm (4.0 in) of precipitation over about 11 days, contributing to an average humidity level of 68%. Plan accordingly for an engaging experience in this diverse climate!

September Temperature in Culpeper

In September in Culpeper, the average temperature is 22°C (71°F). Maximums can reach 37°C (98°F) and minimums can be as low as 4°C (40°F). This temperature variation makes Culpeper an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Culpeper, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Culpeper, September typically has an average temperature of 22°C (71°F), with highs reaching up to 37°C (98°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec374247576674807771614741
Data source: Temperature data for Culpeper generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Culpeper

In Culpeper in September, the precipitation amount is 102 mm (4.0 in) over the course of 11 days.

September Precipitation Trends in Culpeper

The chart displays monthly precipitation patterns in Culpeper, 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 Culpeper, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec618774111123116851301021108287
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Culpeper

In Culpeper in September, humidity is 68%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making traveling quite pleasant yet slightly sticky as you explore the sights.

September Average Humidity in Culpeper

This chart illustrates the average monthly humidity levels in Culpeper, 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 Culpeper 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 Culpeper

In Culpeper 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 Culpeper.

Maximum UV Index Levels in Culpeper for September

The chart shows the monthly maximum UV Index (UVI) for Culpeper 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 Culpeper typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357911101098753
Data source: Culpeper 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 Culpeper Compares to Other Months

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

This table compares monthly weather conditions in Culpeper, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)61 mm (2.4 inches)86%moderate
February Weather5°C (42°F)87 mm (3.4 inches)86%moderate
March Weather8°C (47°F)73 mm (2.9 inches)86%high
April Weather14°C (57°F)111 mm (4.4 inches)84%very high
May Weather19°C (67°F)123 mm (4.8 inches)78%extreme
June Weather24°C (75°F)116 mm (4.6 inches)79%very high
July Weather27°C (80°F)85 mm (3.3 inches)70%very high
August Weather25°C (77°F)130 mm (5.1 inches)59%very high
September Weather22°C (71°F)102 mm (4.0 inches)68%very high
October Weather16°C (62°F)110 mm (4.3 inches)80%high
November Weather8°C (47°F)82 mm (3.2 inches)86%moderate
December Weather5°C (41°F)87 mm (3.4 inches)85%moderate

Compare Culpeper's Climate with Cities Worldwide