September Weather in Lakeside, United States

Last updated: June 24, 2025

In September, the average temperature in Lakeside, United States hovers around 19°C (67°F), with lows dipping to 4°C (39°F) and highs soaring up to 35°C (95°F). Expect about 105 mm (4.1 in) of precipitation over 9 days, contributing to an average humidity of 75%.

September Temperature in Lakeside

In September in Lakeside, the average temperature is 19°C (67°F). Maximums can reach 35°C (95°F), and minimums can be as low as 4°C (39°F). This diverse temperature range makes Lakeside an ideal destination for travelers looking to enjoy both warm days and cool evenings.

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

The chart illustrates September temperature patterns in Lakeside, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lakeside, September typically has an average temperature of 19°C (67°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Lakeside

In Lakeside in September, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.

September Precipitation Trends in Lakeside

The chart displays monthly precipitation patterns in Lakeside, 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 Lakeside, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 9 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 Lakeside

In Lakeside in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

September Average Humidity in Lakeside

This chart illustrates the average monthly humidity levels in Lakeside, 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 Lakeside is approximately 75%, 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 Lakeside

In Lakeside in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Lakeside.

Maximum UV Index Levels in Lakeside for September

The chart shows the monthly maximum UV Index (UVI) for Lakeside 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 Lakeside typically reaches 8, which falls under the very high exposure category.

Data source: Lakeside 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 Lakeside Compares to Other Months

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

This table compares monthly weather conditions in Lakeside, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	25 mm (1.0 inches)	80%	moderate
February Weather	-6°C (22°F)	41 mm (1.6 inches)	84%	moderate
March Weather	3°C (37°F)	74 mm (2.9 inches)	75%	moderate
April Weather	8°C (47°F)	76 mm (3.0 inches)	79%	very high
May Weather	16°C (61°F)	142 mm (5.6 inches)	74%	very high
June Weather	23°C (74°F)	115 mm (4.5 inches)	81%	extreme
July Weather	24°C (76°F)	60 mm (2.4 inches)	82%	very high
August Weather	22°C (72°F)	108 mm (4.2 inches)	80%	very high
September Weather	19°C (67°F)	105 mm (4.1 inches)	75%	very high
October Weather	10°C (50°F)	103 mm (4.0 inches)	77%	high
November Weather	2°C (37°F)	34 mm (1.4 inches)	85%	moderate
December Weather	-2°C (28°F)	40 mm (1.6 inches)	83%	low