September Weather in Fernley, United States

Last updated: June 24, 2025

In Fernley, United States, the average temperature in September hovers around 21°C (70°F). However, be prepared for a range in temperatures, with minimums dipping to 3°C (37°F) and maximums soaring to 39°C (102°F). Rainfall is minimal, with an average precipitation of just 4 mm (0.1 in) over the course of 1 day. You'll also find the average humidity is a comfortable 41%, making it an ideal time to explore!

September Temperature in Fernley

In September in Fernley, the average temperature is 21°C (70°F). Maximum temperatures can reach 39°C (102°F), while minimums can drop to as low as 3°C (37°F). Pack accordingly to enjoy a variety of weather conditions during your travels!

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

The chart illustrates September temperature patterns in Fernley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fernley, September typically has an average temperature of 21°C (70°F), with highs reaching up to 39°C (102°F) and lows dropping to around 3°C (37°F).

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

September Precipitation in Fernley

In Fernley in September, the precipitation amount is 4 mm (0.1 in) over the course of 1 day.

September Precipitation Trends in Fernley

The chart displays monthly precipitation patterns in Fernley, 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 Fernley, September typically receives around 4 mm (0.1 inches) of precipitation spread over approximately 1 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 Fernley

In Fernley in September humidity is 41%. With an average temperature of 21°C (70°F), this humidity feels like a refreshing embrace, making it quite comfortable for traveling, as you can enjoy outdoor activities without feeling weighed down by excessive heat or stickiness.

September Average Humidity in Fernley

This chart illustrates the average monthly humidity levels in Fernley, 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 Fernley is approximately 41%, 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 Fernley

In Fernley 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 Fernley.

Maximum UV Index Levels in Fernley for September

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

Data source: Fernley 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 Fernley Compares to Other Months

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

This table compares monthly weather conditions in Fernley, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (37°F)	48 mm (1.9 inches)	85%	moderate
February Weather	4°C (39°F)	44 mm (1.7 inches)	87%	moderate
March Weather	7°C (45°F)	39 mm (1.5 inches)	84%	very high
April Weather	12°C (54°F)	17 mm (0.7 inches)	78%	very high
May Weather	16°C (62°F)	23 mm (0.9 inches)	64%	extreme
June Weather	23°C (73°F)	6 mm (0.2 inches)	56%	extreme
July Weather	28°C (82°F)	6 mm (0.2 inches)	44%	extreme
August Weather	27°C (80°F)	6 mm (0.2 inches)	34%	extreme
September Weather	21°C (70°F)	4 mm (0.1 inches)	41%	very high
October Weather	12°C (54°F)	22 mm (0.9 inches)	60%	high
November Weather	7°C (44°F)	20 mm (0.8 inches)	81%	moderate
December Weather	2°C (35°F)	33 mm (1.3 inches)	82%	moderate