September Weather in Richlands, United States

Last updated: June 24, 2025

In Richlands, United States, the average temperature in September hovers around 24°C (75°F). Expect a range that can dip as low as 10°C (49°F) and soar up to 35°C (96°F). With an average humidity of 79%, you're in for a warm and humid experience. Don't forget your umbrella, as 196 mm (7.7 in) of precipitation can be expected over 11 days.

September Temperature in Richlands

In September in Richlands, the average temperature is 24°C (75°F). Maximums can reach 35°C (96°F) and minimums can drop as low as 10°C (49°F). This makes it an ideal time for travelers to enjoy outdoor activities while being prepared for varying temperatures.

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

The chart illustrates September temperature patterns in Richlands, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richlands, September typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 10°C (49°F).

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

September Precipitation in Richlands

In Richlands, in September, the total precipitation amount is 196 mm (7.7 in) spread over 11 days.

September Precipitation Trends in Richlands

The chart displays monthly precipitation patterns in Richlands, 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 Richlands, September typically receives around 196 mm (7.7 inches) of precipitation spread over approximately 11 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 Richlands

In Richlands in September, humidity is 79%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making traveling quite sticky and requiring ample hydration and light clothing to keep comfortable while exploring.

September Average Humidity in Richlands

This chart illustrates the average monthly humidity levels in Richlands, 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 Richlands is approximately 79%, 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 Richlands

In Richlands 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 Richlands.

Maximum UV Index Levels in Richlands for September

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

Data source: Richlands 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 Richlands Compares to Other Months

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

This table compares monthly weather conditions in Richlands, 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 (46°F)	79 mm (3.1 inches)	85%	moderate
February Weather	11°C (52°F)	93 mm (3.7 inches)	82%	high
March Weather	12°C (55°F)	68 mm (2.7 inches)	81%	very high
April Weather	17°C (63°F)	110 mm (4.3 inches)	80%	very high
May Weather	22°C (71°F)	125 mm (4.9 inches)	81%	extreme
June Weather	25°C (77°F)	166 mm (6.5 inches)	81%	extreme
July Weather	27°C (80°F)	147 mm (5.8 inches)	81%	extreme
August Weather	26°C (79°F)	190 mm (7.5 inches)	80%	very high
September Weather	24°C (75°F)	196 mm (7.7 inches)	79%	very high
October Weather	20°C (67°F)	69 mm (2.7 inches)	80%	very high
November Weather	12°C (54°F)	101 mm (4.0 inches)	85%	moderate
December Weather	10°C (50°F)	116 mm (4.6 inches)	86%	moderate