September Weather in Bertram, United States

Last updated: June 24, 2025

In September, the average temperature in Bertram, United States hovers around 26°C (79°F), offering a pleasant climate for visitors. However, be prepared for a range of temperatures; the minimum can drop to 10°C (50°F), while the maximum can soar to 38°C (101°F). Expect some rain, with 93 mm (3.7 in) of precipitation over approximately 9 days. With an average humidity of 66%, the weather can feel quite comfortable, making it ideal for exploring the sights!

September Temperature in Bertram

In September in Bertram, the average temperature is 26°C (79°F), with maximums reaching as high as 38°C (101°F) and minimums dropping to as low as 10°C (50°F). Travelers should be prepared for warm days and cool nights during their visit.

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

The chart illustrates September temperature patterns in Bertram, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bertram, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (101°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Bertram

In Bertram in September, the precipitation amount is 93 mm (3.7 in) over the course of 9 days.

September Precipitation Trends in Bertram

The chart displays monthly precipitation patterns in Bertram, 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 Bertram, September typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 9 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 Bertram

In Bertram in September, humidity is 66%. With an average temperature of 26°C (79°F), this humidity feels like a warm, enveloping blanket, making outdoor activities invigorating yet requiring occasional breaks in the shade to stay comfortable while traveling.

September Average Humidity in Bertram

This chart illustrates the average monthly humidity levels in Bertram, 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 Bertram is approximately 66%, 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 Bertram

In Bertram 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 Bertram.

Maximum UV Index Levels in Bertram for September

The chart shows the monthly maximum UV Index (UVI) for Bertram 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 Bertram typically reaches 11, which falls under the extreme exposure category.

Data source: Bertram 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 Bertram Compares to Other Months

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

This table compares monthly weather conditions in Bertram, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	49 mm (1.9 inches)	78%	moderate
February Weather	11°C (52°F)	63 mm (2.5 inches)	78%	high
March Weather	17°C (63°F)	73 mm (2.9 inches)	77%	very high
April Weather	20°C (68°F)	80 mm (3.1 inches)	78%	extreme
May Weather	24°C (76°F)	167 mm (6.6 inches)	82%	extreme
June Weather	27°C (82°F)	75 mm (2.9 inches)	78%	extreme
July Weather	29°C (85°F)	63 mm (2.5 inches)	69%	extreme
August Weather	29°C (85°F)	92 mm (3.6 inches)	63%	extreme
September Weather	26°C (79°F)	93 mm (3.7 inches)	66%	extreme
October Weather	21°C (70°F)	105 mm (4.1 inches)	73%	very high
November Weather	15°C (59°F)	37 mm (1.5 inches)	84%	high
December Weather	12°C (54°F)	54 mm (2.1 inches)	87%	moderate