September Weather in Middletown, United States

Last updated: June 24, 2025

In September, the average temperature in Middletown, United States is a pleasant 22°C (72°F), with temperatures ranging from a cool 9°C (48°F) to a warm 33°C (92°F). Expect approximately 95 mm (3.8 in) of precipitation over about 11 days, and brace yourself for an average humidity level of 75%.

September Temperature in Middletown

In September in Middletown, the average temperature is 22°C (72°F). Maximums can reach 33°C (92°F), while minimums can be as low as 9°C (48°F). It’s a great time for travelers to enjoy a mix of warm days and cooler nights.

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

The chart illustrates September temperature patterns in Middletown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Middletown, September typically has an average temperature of 22°C (72°F), with highs reaching up to 33°C (92°F) and lows dropping to around 9°C (48°F).

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

September Precipitation in Middletown

In Middletown in September, the precipitation amount is 95 mm (3.8 in) spread over 11 days.

September Precipitation Trends in Middletown

The chart displays monthly precipitation patterns in Middletown, 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 Middletown, September typically receives around 95 mm (3.8 inches) of precipitation spread over approximately 11 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Middletown

In Middletown in September, humidity is 75%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet requiring travelers to stay hydrated and take breaks in shaded areas.

September Average Humidity in Middletown

This chart illustrates the average monthly humidity levels in Middletown, 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 Middletown is approximately 75%, 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 Middletown

In Middletown 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 Middletown.

Maximum UV Index Levels in Middletown for September

The chart shows the monthly maximum UV Index (UVI) for Middletown 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 Middletown typically reaches 8, which falls under the very high exposure category.

Data source: Middletown 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 Middletown Compares to Other Months

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

This table compares monthly weather conditions in Middletown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (37°F)	60 mm (2.4 inches)	84%	moderate
February Weather	4°C (40°F)	98 mm (3.8 inches)	83%	moderate
March Weather	7°C (46°F)	100 mm (4.0 inches)	83%	high
April Weather	13°C (56°F)	101 mm (4.0 inches)	81%	very high
May Weather	18°C (66°F)	133 mm (5.2 inches)	78%	very high
June Weather	24°C (75°F)	102 mm (4.0 inches)	79%	very high
July Weather	27°C (80°F)	132 mm (5.2 inches)	74%	very high
August Weather	25°C (78°F)	142 mm (5.6 inches)	72%	very high
September Weather	22°C (72°F)	95 mm (3.8 inches)	75%	very high
October Weather	17°C (62°F)	107 mm (4.2 inches)	81%	high
November Weather	9°C (48°F)	82 mm (3.2 inches)	85%	moderate
December Weather	5°C (41°F)	98 mm (3.9 inches)	84%	moderate