September Weather in Wapello, United States

Last updated: June 24, 2025

In September, the average temperature in Wapello, United States hovers around 21°C (69°F). Be prepared for a range of minimum temperatures dipping to 6°C (43°F) and soaring to a maximum of 35°C (95°F). Expect about 109 mm (4.3 in) of precipitation over the course of 8 days, accompanied by an average humidity level of 78%—perfect for those who love a moist, tropical feel!

September Temperature in Wapello

In September in Wapello, the average temperature is 21°C (69°F). Maximums can reach 35°C (95°F), while minimums can dip as low as 6°C (43°F). It's advisable to pack layers to accommodate the temperature fluctuations during your travels.

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

The chart illustrates September temperature patterns in Wapello, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wapello, September typically has an average temperature of 21°C (69°F), with highs reaching up to 35°C (95°F) and lows dropping to around 6°C (43°F).

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

September Precipitation in Wapello

In Wapello in September, the total precipitation amount is 109 mm (4.3 in) spread over 8 days.

September Precipitation Trends in Wapello

The chart displays monthly precipitation patterns in Wapello, 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 Wapello, September typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 8 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 Wapello

In Wapello in September, humidity is 78%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities feel more intense and leaving you yearning for refreshing breezes or a cool drink as you explore.

September Average Humidity in Wapello

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

In Wapello 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 Wapello.

Maximum UV Index Levels in Wapello for September

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

Data source: Wapello 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 Wapello Compares to Other Months

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

This table compares monthly weather conditions in Wapello, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	53 mm (2.1 inches)	81%	moderate
February Weather	-3°C (27°F)	59 mm (2.3 inches)	81%	moderate
March Weather	5°C (41°F)	91 mm (3.6 inches)	81%	high
April Weather	10°C (50°F)	88 mm (3.4 inches)	82%	very high
May Weather	17°C (64°F)	156 mm (6.1 inches)	78%	very high
June Weather	24°C (75°F)	141 mm (5.6 inches)	81%	extreme
July Weather	25°C (78°F)	73 mm (2.9 inches)	79%	very high
August Weather	24°C (75°F)	69 mm (2.7 inches)	77%	very high
September Weather	21°C (69°F)	109 mm (4.3 inches)	78%	very high
October Weather	12°C (55°F)	132 mm (5.2 inches)	78%	high
November Weather	4°C (40°F)	50 mm (2.0 inches)	87%	moderate
December Weather	0°C (33°F)	48 mm (1.9 inches)	84%	low