September Weather in Granger, United States

Last updated: June 24, 2025

In Granger, United States, the average temperature in September hovers around 19°C (67°F). This month can bring a range of temperatures, with minimums dipping to 3°C (39°F) and maximums soaring to 39°C (103°F). Expect about 10 mm (0.4 in) of precipitation over 2 days, accompanied by an average humidity of 62%. Prepare for a variety of weather conditions!

September Temperature in Granger

In September in Granger, the average temperature is 19°C (67°F). Maximum temperatures can reach 39°C (103°F), while minimums can drop as low as 3°C (39°F). Pack accordingly to enjoy both warm days and cooler nights during your travels!

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

The chart illustrates September temperature patterns in Granger, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Granger, September typically has an average temperature of 19°C (67°F), with highs reaching up to 39°C (103°F) and lows dropping to around 3°C (39°F).

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

September Precipitation in Granger

In Granger in September, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

September Precipitation Trends in Granger

The chart displays monthly precipitation patterns in Granger, 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 Granger, September typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 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 Granger

In Granger in September humidity is 62%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making it pleasant for traveling, though you might want to stay hydrated and take occasional breaks in the shade to fully enjoy your adventures.

September Average Humidity in Granger

This chart illustrates the average monthly humidity levels in Granger, 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 Granger is approximately 62%, 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 Granger

In Granger in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Granger.

Maximum UV Index Levels in Granger for September

The chart shows the monthly maximum UV Index (UVI) for Granger 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 Granger typically reaches 7, which falls under the high exposure category.

Data source: Granger 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 Granger Compares to Other Months

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

This table compares monthly weather conditions in Granger, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	51 mm (2.0 inches)	86%	low
February Weather	2°C (36°F)	51 mm (2.0 inches)	86%	moderate
March Weather	7°C (44°F)	27 mm (1.1 inches)	87%	moderate
April Weather	11°C (53°F)	24 mm (1.0 inches)	84%	high
May Weather	17°C (63°F)	18 mm (0.7 inches)	81%	very high
June Weather	22°C (72°F)	6 mm (0.2 inches)	82%	very high
July Weather	26°C (79°F)	1 mm (0.0 inches)	79%	very high
August Weather	25°C (78°F)	5 mm (0.2 inches)	63%	very high
September Weather	19°C (67°F)	10 mm (0.4 inches)	62%	high
October Weather	11°C (52°F)	27 mm (1.1 inches)	83%	moderate
November Weather	5°C (42°F)	34 mm (1.3 inches)	89%	moderate
December Weather	1°C (35°F)	42 mm (1.6 inches)	88%	low