September Weather in Lehi, United States

Last updated: June 24, 2025

In September, the average temperature in Lehi, United States is a comfortable 17°C (62°F). However, be prepared for some fluctuations, as temperatures can dip to as low as -5°C (23°F) and soar up to 34°C (93°F). Expect a bit of rain with an average precipitation of 35 mm (1.4 in) spread over 5 days. The average humidity sits at a moderate 46%, making it a pleasant time to visit!

September Temperature in Lehi

In September in Lehi, the average temperature is 17°C (62°F). Maximums can reach 34°C (93°F) while minimums can drop as low as -5°C (23°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates September temperature patterns in Lehi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lehi, September typically has an average temperature of 17°C (62°F), with highs reaching up to 34°C (93°F) and lows dropping to around -5°C (23°F).

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

September Precipitation in Lehi

In Lehi in September, the precipitation amount is 35 mm (1.4 in) over a span of 5 days.

September Precipitation Trends in Lehi

The chart displays monthly precipitation patterns in Lehi, 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 Lehi, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 5 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 Lehi

In Lehi in September, humidity is 46%. With an average temperature of 17°C (62°F), this humidity feels like a refreshing breeze, making it comfortable for exploring the local attractions and enjoying outdoor activities.

September Average Humidity in Lehi

This chart illustrates the average monthly humidity levels in Lehi, 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 Lehi is approximately 46%, 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 Lehi

In Lehi 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 Lehi.

Maximum UV Index Levels in Lehi for September

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

Data source: Lehi 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 Lehi Compares to Other Months

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

This table compares monthly weather conditions in Lehi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	70 mm (2.8 inches)	91%	moderate
February Weather	-3°C (27°F)	77 mm (3.0 inches)	92%	high
March Weather	2°C (35°F)	74 mm (2.9 inches)	84%	very high
April Weather	5°C (42°F)	68 mm (2.7 inches)	74%	extreme
May Weather	11°C (51°F)	64 mm (2.5 inches)	62%	extreme
June Weather	19°C (66°F)	21 mm (0.8 inches)	56%	extreme
July Weather	24°C (75°F)	20 mm (0.8 inches)	44%	extreme
August Weather	22°C (72°F)	27 mm (1.1 inches)	37%	extreme
September Weather	17°C (62°F)	35 mm (1.4 inches)	46%	very high
October Weather	7°C (45°F)	45 mm (1.8 inches)	67%	high
November Weather	2°C (35°F)	45 mm (1.8 inches)	84%	moderate
December Weather	-4°C (24°F)	60 mm (2.3 inches)	88%	moderate