September Weather in Fallon, United States

Last updated: June 24, 2025

In September, the average temperature in Fallon, United States hovers around 22°C (72°F). However, be prepared for a temperature swing, as it can dip to a chilly 4°C (39°F) or soar up to a scorching 40°C (105°F). Rainfall is minimal, with just 3 mm (0.1 in) expected over 0 days, and the average humidity sits comfortably at 41%.

September Temperature in Fallon

In September in Fallon, the average temperature is 22°C (72°F). The maximum can reach 40°C (105°F), and the minimum can be as low as 4°C (39°F). This wide temperature range makes it essential for travelers to pack accordingly for both warm days and cool evenings.

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

The chart illustrates September temperature patterns in Fallon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fallon, September typically has an average temperature of 22°C (72°F), with highs reaching up to 40°C (105°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Fallon

In Fallon in September, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

September Precipitation Trends in Fallon

The chart displays monthly precipitation patterns in Fallon, 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 Fallon, September typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 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 Fallon

In Fallon in September humidity is 41%. With an average temperature of 22°C (72°F), this humidity feels like a pleasant warmth that enhances the overall travel experience, making it comfortable for exploring outdoor attractions without feeling too sticky or oppressive.

September Average Humidity in Fallon

This chart illustrates the average monthly humidity levels in Fallon, 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 Fallon 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 Fallon

In Fallon 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 Fallon.

Maximum UV Index Levels in Fallon for September

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

Data source: Fallon 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 Fallon Compares to Other Months

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

This table compares monthly weather conditions in Fallon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	29 mm (1.2 inches)	85%	moderate
February Weather	5°C (42°F)	26 mm (1.0 inches)	87%	moderate
March Weather	9°C (49°F)	28 mm (1.1 inches)	84%	very high
April Weather	14°C (57°F)	12 mm (0.5 inches)	78%	very high
May Weather	18°C (65°F)	17 mm (0.7 inches)	64%	extreme
June Weather	25°C (77°F)	4 mm (0.2 inches)	56%	extreme
July Weather	29°C (85°F)	2 mm (0.1 inches)	44%	extreme
August Weather	28°C (83°F)	2 mm (0.1 inches)	34%	extreme
September Weather	22°C (72°F)	3 mm (0.1 inches)	41%	very high
October Weather	13°C (55°F)	16 mm (0.6 inches)	60%	high
November Weather	7°C (45°F)	14 mm (0.5 inches)	81%	moderate
December Weather	2°C (37°F)	24 mm (0.9 inches)	82%	moderate