September Weather in Lake Mack-Forest Hills, United States

Last updated: June 24, 2025

In September, the average temperature in Lake Mack-Forest Hills, United States hovers around 27°C (81°F). Temperatures can range from a comfortable 18°C (64°F) to a sweltering 36°C (97°F). Expect about 157 mm (6.2 in) of precipitation over 18 days, coupled with a high average humidity of 83%. Perfect for those who enjoy a tropical climate!

September Temperature in Lake Mack-Forest Hills

In September in Lake Mack-Forest Hills, the average temperature is 27°C (81°F). Maximums can reach 36°C (97°F), while minimums can be as low as 18°C (64°F). Travelers should prepare for warm weather with the possibility of hot days and cooler evenings, making it ideal for outdoor activities.

September Weather in Lake Mack-Forest Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lake Mack-Forest Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lake Mack-Forest Hills, September typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (97°F) and lows dropping to around 18°C (64°F).

Data source: Temperature data for Lake Mack-Forest Hills generated using information from the Copernicus Climate Change Service.

September Precipitation in Lake Mack-Forest Hills

In Lake Mack-Forest Hills, in September, the precipitation amount is 157 mm (6.2 in) distributed over 18 days.

September Precipitation Trends in Lake Mack-Forest Hills

The chart displays monthly precipitation patterns in Lake Mack-Forest Hills, 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 Lake Mack-Forest Hills, September typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 18 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 Lake Mack-Forest Hills

In Lake Mack-Forest Hills in September humidity is 83%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making sightseeing and outdoor activities feel more exhausting and requiring frequent breaks to relax in the shade or cool off.

September Average Humidity in Lake Mack-Forest Hills

This chart illustrates the average monthly humidity levels in Lake Mack-Forest Hills, 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 Lake Mack-Forest Hills is approximately 83%, 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 Lake Mack-Forest Hills

In Lake Mack-Forest Hills in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Lake Mack-Forest Hills.

Maximum UV Index Levels in Lake Mack-Forest Hills for September

The chart shows the monthly maximum UV Index (UVI) for Lake Mack-Forest Hills 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 Lake Mack-Forest Hills typically reaches 11, which falls under the extreme exposure category.

Data source: Lake Mack-Forest Hills 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 Lake Mack-Forest Hills Compares to Other Months

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

This table compares monthly weather conditions in Lake Mack-Forest Hills, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (60°F)	46 mm (1.8 inches)	83%	moderate
February Weather	18°C (66°F)	57 mm (2.2 inches)	80%	very high
March Weather	20°C (67°F)	25 mm (1.0 inches)	75%	very high
April Weather	22°C (72°F)	78 mm (3.1 inches)	70%	extreme
May Weather	25°C (77°F)	98 mm (3.9 inches)	68%	extreme
June Weather	27°C (80°F)	197 mm (7.7 inches)	75%	extreme
July Weather	27°C (81°F)	224 mm (8.8 inches)	79%	extreme
August Weather	28°C (82°F)	207 mm (8.2 inches)	81%	extreme
September Weather	27°C (81°F)	157 mm (6.2 inches)	83%	extreme
October Weather	25°C (77°F)	88 mm (3.5 inches)	81%	very high
November Weather	20°C (68°F)	57 mm (2.2 inches)	82%	high
December Weather	17°C (63°F)	67 mm (2.7 inches)	84%	moderate