September Weather in Mifflin, United States

Last updated: June 24, 2025

The average temperature in Mifflin, United States during September hovers around 20°C (68°F), with minimum temperatures dropping to 3°C (38°F) and peaking at a scorching 33°C (92°F). Expect about 129 mm (5.1 in) of precipitation spread over 10 days, contributing to a comfortable humidity level of 67%. Get ready to embrace the weather!

September Temperature in Mifflin

In September, in Mifflin, the average temperature is 20°C (68°F). Maximum temperatures can reach up to 33°C (92°F), while minimums can drop to as low as 3°C (38°F). This makes Mifflin an ideal destination for travelers seeking pleasant weather and a chance to experience both warm days and cool nights.

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

The chart illustrates September temperature patterns in Mifflin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mifflin, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Mifflin

In Mifflin in September, the precipitation amount is 129 mm (5.1 in) over a span of 10 days.

September Precipitation Trends in Mifflin

The chart displays monthly precipitation patterns in Mifflin, 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 Mifflin, September typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 10 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 Mifflin

In Mifflin in September humidity is 67%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making travel comfortable yet slightly sticky, as the air clings to your skin and invites you to enjoy the sights at a leisurely pace.

September Average Humidity in Mifflin

This chart illustrates the average monthly humidity levels in Mifflin, 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 Mifflin is approximately 67%, 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 Mifflin

In Mifflin 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 Mifflin.

Maximum UV Index Levels in Mifflin for September

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

Data source: Mifflin 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 Mifflin Compares to Other Months

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

This table compares monthly weather conditions in Mifflin, 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 (31°F)	65 mm (2.6 inches)	89%	moderate
February Weather	1°C (34°F)	104 mm (4.1 inches)	90%	moderate
March Weather	5°C (41°F)	94 mm (3.7 inches)	89%	high
April Weather	11°C (51°F)	102 mm (4.0 inches)	88%	very high
May Weather	17°C (62°F)	120 mm (4.7 inches)	80%	very high
June Weather	21°C (71°F)	101 mm (4.0 inches)	79%	very high
July Weather	24°C (76°F)	121 mm (4.8 inches)	74%	very high
August Weather	23°C (74°F)	102 mm (4.0 inches)	64%	very high
September Weather	20°C (68°F)	129 mm (5.1 inches)	67%	very high
October Weather	14°C (57°F)	113 mm (4.5 inches)	81%	high
November Weather	6°C (42°F)	85 mm (3.3 inches)	89%	moderate
December Weather	2°C (36°F)	91 mm (3.6 inches)	88%	low