September Weather in Harrington, United States

Last updated: June 24, 2025

In September, the average temperature in Harrington, United States hovers around 15°C (60°F). Expect temperatures to dip as low as 8°C (46°F), while highs can reach up to 24°C (75°F). Be prepared for 99 mm (3.9 in) of precipitation over approximately 8 days, contributing to an average humidity level of 77%.

September Temperature in Harrington

In September in Harrington, the average temperature is 15°C (60°F). Maximums can reach 24°C (75°F), and minimums can be as low as 8°C (46°F). This pleasant climate makes Harrington an ideal destination for travelers seeking comfortable weather and enjoyable outdoor activities.

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

The chart illustrates September temperature patterns in Harrington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harrington, September typically has an average temperature of 15°C (60°F), with highs reaching up to 24°C (75°F) and lows dropping to around 8°C (46°F).

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

September Precipitation in Harrington

In Harrington in September, the precipitation amount is 99 mm (3.9 in) spread over 8 days.

September Precipitation Trends in Harrington

The chart displays monthly precipitation patterns in Harrington, 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 Harrington, September typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 8 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 Harrington

In Harrington in September, humidity is 77%. With an average temperature of 15°C (60°F), this humidity feels like you're wading through a warm, heavy blanket, making travel feel more exhausting and sticky than usual.

September Average Humidity in Harrington

This chart illustrates the average monthly humidity levels in Harrington, 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 Harrington is approximately 77%, 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 Harrington

In Harrington in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Harrington.

Maximum UV Index Levels in Harrington for September

The chart shows the monthly maximum UV Index (UVI) for Harrington 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 Harrington typically reaches 7, which falls under the high exposure category.

Data source: Harrington 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 Harrington Compares to Other Months

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

This table compares monthly weather conditions in Harrington, 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 (28°F)	107 mm (4.2 inches)	88%	low
February Weather	-2°C (28°F)	103 mm (4.1 inches)	88%	moderate
March Weather	0°C (33°F)	82 mm (3.2 inches)	85%	moderate
April Weather	5°C (42°F)	137 mm (5.4 inches)	81%	high
May Weather	9°C (49°F)	107 mm (4.2 inches)	76%	very high
June Weather	14°C (57°F)	98 mm (3.9 inches)	74%	very high
July Weather	17°C (63°F)	80 mm (3.1 inches)	74%	very high
August Weather	18°C (64°F)	79 mm (3.1 inches)	74%	very high
September Weather	15°C (60°F)	99 mm (3.9 inches)	77%	high
October Weather	12°C (53°F)	115 mm (4.5 inches)	82%	moderate
November Weather	6°C (43°F)	141 mm (5.6 inches)	85%	moderate
December Weather	0°C (33°F)	143 mm (5.6 inches)	84%	low