September Weather in Carlisle, United States

Last updated: June 24, 2025

In Carlisle, United States, the average temperature in September is a pleasant 25°C (77°F). However, temperatures can vary significantly, with a minimum of 10°C (51°F) and a maximum soaring to 37°C (98°F). Be prepared for some rain, as the area receives an average of 89 mm (3.5 in) over about 7 days, coupled with an average humidity of 71%.

September Temperature in Carlisle

In September in Carlisle, the average temperature is 25°C (77°F). Maximum temperatures can reach 37°C (98°F), and the minimum can drop as low as 10°C (51°F). This makes for a pleasant time to explore and enjoy various outdoor activities.

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

The chart illustrates September temperature patterns in Carlisle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carlisle, September typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (98°F) and lows dropping to around 10°C (51°F).

Data source: Temperature data for Carlisle generated using information from the Copernicus Climate Change Service.

September Precipitation in Carlisle

In Carlisle in September, the total precipitation amount is 89 mm (3.5 in) spread over a period of 7 days.

September Precipitation Trends in Carlisle

The chart displays monthly precipitation patterns in Carlisle, 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 Carlisle, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Carlisle

In Carlisle in September humidity is 71%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making outdoor exploration a bit sticky but still enjoyable, especially if you take breaks in shaded areas and stay hydrated.

September Average Humidity in Carlisle

This chart illustrates the average monthly humidity levels in Carlisle, 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 Carlisle is approximately 71%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Carlisle

In Carlisle in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Carlisle.

Maximum UV Index Levels in Carlisle for September

The chart shows the monthly maximum UV Index (UVI) for Carlisle 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 Carlisle typically reaches 9, which falls under the very high exposure category.

Data source: Carlisle 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 Carlisle Compares to Other Months

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

This table compares monthly weather conditions in Carlisle, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	98 mm (3.9 inches)	84%	moderate
February Weather	8°C (46°F)	158 mm (6.2 inches)	83%	high
March Weather	13°C (57°F)	159 mm (6.2 inches)	81%	very high
April Weather	17°C (62°F)	162 mm (6.4 inches)	81%	very high
May Weather	22°C (73°F)	171 mm (6.7 inches)	83%	extreme
June Weather	26°C (79°F)	103 mm (4.0 inches)	83%	extreme
July Weather	28°C (83°F)	109 mm (4.3 inches)	81%	extreme
August Weather	27°C (81°F)	115 mm (4.5 inches)	74%	very high
September Weather	25°C (77°F)	89 mm (3.5 inches)	71%	very high
October Weather	18°C (65°F)	119 mm (4.7 inches)	76%	high
November Weather	11°C (52°F)	77 mm (3.0 inches)	84%	moderate
December Weather	9°C (48°F)	157 mm (6.2 inches)	88%	moderate