September Weather in Reliance, United States

Last updated: June 24, 2025

In September, the average temperature in Reliance, United States is a comfortable 16°C (60°F). However, be prepared for a wide range of temperatures, as lows can dip to -2°C (28°F) and highs can soar up to 33°C (91°F). With an average precipitation of 21 mm (0.8 in) spread over 3 days, and humidity levels around 50%, it's advisable to pack accordingly for your trip!

September Temperature in Reliance

In September in Reliance, the average temperature is 16°C (60°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as -2°C (28°F). Travelers should prepare for a wide range of temperatures and pack accordingly for both warm days and cooler nights.

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

The chart illustrates September temperature patterns in Reliance, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Reliance, September typically has an average temperature of 16°C (60°F), with highs reaching up to 33°C (91°F) and lows dropping to around -2°C (28°F).

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

September Precipitation in Reliance

In Reliance in September, the precipitation amount is 21 mm (0.8 in) over a period of 3 days.

September Precipitation Trends in Reliance

The chart displays monthly precipitation patterns in Reliance, 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 Reliance, September typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 3 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 Reliance

In Reliance in September humidity is 50%. With an average temperature of 16°C (60°F), this humidity feels like a refreshing embrace, making it pleasant for traveling as you can enjoy the cool air without feeling sticky or uncomfortable.

September Average Humidity in Reliance

This chart illustrates the average monthly humidity levels in Reliance, 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 Reliance is approximately 50%, 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 Reliance

In Reliance in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Reliance.

Maximum UV Index Levels in Reliance for September

The chart shows the monthly maximum UV Index (UVI) for Reliance 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 Reliance typically reaches 9, which falls under the very high exposure category.

Data source: Reliance 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 Reliance Compares to Other Months

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

This table compares monthly weather conditions in Reliance, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	24 mm (0.9 inches)	92%	moderate
February Weather	-7°C (21°F)	27 mm (1.1 inches)	93%	high
March Weather	-1°C (31°F)	38 mm (1.5 inches)	85%	high
April Weather	5°C (41°F)	41 mm (1.6 inches)	73%	very high
May Weather	11°C (51°F)	46 mm (1.8 inches)	64%	extreme
June Weather	18°C (65°F)	18 mm (0.7 inches)	57%	extreme
July Weather	23°C (73°F)	9 mm (0.4 inches)	45%	extreme
August Weather	21°C (70°F)	9 mm (0.4 inches)	41%	extreme
September Weather	16°C (60°F)	21 mm (0.8 inches)	50%	very high
October Weather	6°C (43°F)	22 mm (0.9 inches)	70%	high
November Weather	1°C (33°F)	25 mm (1.0 inches)	84%	moderate
December Weather	-6°C (21°F)	22 mm (0.8 inches)	90%	moderate