September Weather in Highland, United States

Last updated: June 24, 2025

In Highland, United States during September, the average temperature hovers around 24°C (75°F), with minimum lows of 9°C (48°F) and soaring maximums peaking at 36°C (97°F). Expect around 77 mm (3.0 in) of precipitation spread over 6 days, and a comfortable average humidity of 68%.

September Temperature in Highland

In September in Highland, the average temperature is 24°C (75°F). Maximums can reach 36°C (97°F), and minimums can be as low as 9°C (48°F). It's a great time to visit for those who enjoy warm weather, but be prepared for occasional temperature fluctuations.

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

The chart illustrates September temperature patterns in Highland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Highland, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (97°F) and lows dropping to around 9°C (48°F).

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

September Precipitation in Highland

In Highland in September, the total precipitation amount is 77 mm (3.0 in) occurring over a span of 6 days.

September Precipitation Trends in Highland

The chart displays monthly precipitation patterns in Highland, 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 Highland, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 6 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 Highland

In Highland in September, humidity is 68%. With an average temperature of 24°C (75°F), this humidity feels like a warm, enveloping embrace that can leave travelers feeling sticky and slightly fatigued, making it essential to stay hydrated and take breaks in shaded areas.

September Average Humidity in Highland

This chart illustrates the average monthly humidity levels in Highland, 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 Highland is approximately 68%, 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 Highland

In Highland 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 Highland.

Maximum UV Index Levels in Highland for September

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

Data source: Highland 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 Highland Compares to Other Months

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

This table compares monthly weather conditions in Highland, 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 (38°F)	88 mm (3.5 inches)	83%	moderate
February Weather	5°C (42°F)	124 mm (4.9 inches)	81%	high
March Weather	11°C (52°F)	148 mm (5.8 inches)	80%	very high
April Weather	14°C (58°F)	174 mm (6.8 inches)	80%	very high
May Weather	20°C (69°F)	175 mm (6.9 inches)	83%	very high
June Weather	25°C (77°F)	88 mm (3.5 inches)	83%	extreme
July Weather	27°C (81°F)	85 mm (3.4 inches)	76%	extreme
August Weather	26°C (79°F)	114 mm (4.5 inches)	69%	very high
September Weather	24°C (75°F)	77 mm (3.0 inches)	68%	very high
October Weather	16°C (62°F)	115 mm (4.5 inches)	72%	high
November Weather	9°C (48°F)	85 mm (3.4 inches)	83%	moderate
December Weather	6°C (44°F)	93 mm (3.7 inches)	86%	moderate