September Weather in Monroeville, United States

Last updated: June 24, 2025

In Monroeville, United States, the average temperature in September hovers around 20°C (68°F). Visitors can expect variations, with minimum temperatures dropping to 7°C (45°F) and maximums soaring up to 32°C (90°F). Rainfall averages about 75 mm (2.9 in) over 10 days, accompanied by a humidity level of 78%, making this month a mix of warmth and occasional showers.

September Temperature in Monroeville

In September in Monroeville, the average temperature is 20°C (68°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 7°C (45°F). It’s a great time for travelers to enjoy mild weather while exploring the outdoor attractions in Monroeville.

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

The chart illustrates September temperature patterns in Monroeville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monroeville, September typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (90°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Monroeville

In Monroeville in September, the precipitation amount is 75 mm (2.9 in) spread over a period of 10 days.

September Precipitation Trends in Monroeville

The chart displays monthly precipitation patterns in Monroeville, 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 Monroeville, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 10 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 Monroeville

In Monroeville in September humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.

September Average Humidity in Monroeville

This chart illustrates the average monthly humidity levels in Monroeville, 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 Monroeville is approximately 78%, 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 Monroeville

In Monroeville 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 Monroeville.

Maximum UV Index Levels in Monroeville for September

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

Data source: Monroeville 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 Monroeville Compares to Other Months

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

This table compares monthly weather conditions in Monroeville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	76 mm (3.0 inches)	88%	moderate
February Weather	0°C (32°F)	87 mm (3.4 inches)	87%	moderate
March Weather	4°C (40°F)	92 mm (3.6 inches)	87%	high
April Weather	10°C (49°F)	111 mm (4.4 inches)	87%	very high
May Weather	16°C (61°F)	125 mm (4.9 inches)	81%	very high
June Weather	21°C (71°F)	119 mm (4.7 inches)	82%	very high
July Weather	24°C (75°F)	124 mm (4.9 inches)	81%	very high
August Weather	23°C (73°F)	83 mm (3.3 inches)	78%	very high
September Weather	20°C (68°F)	75 mm (2.9 inches)	78%	very high
October Weather	14°C (57°F)	98 mm (3.9 inches)	82%	high
November Weather	5°C (42°F)	93 mm (3.7 inches)	89%	moderate
December Weather	2°C (35°F)	76 mm (3.0 inches)	86%	low