September Weather in Shiner, United States

Last updated: June 24, 2025

In Shiner, United States, the average temperature in September hovers around 27°C (82°F), making it a warm destination. Expect the thermometer to dip as low as 12°C (53°F) and peak at a sizzling 39°C (102°F). During this period, you can anticipate 108 mm (4.3 in) of rainfall spread over approximately 12 days, contributing to an average humidity level of 73%.

September Temperature in Shiner

In September in Shiner, the average temperature is 27°C (82°F). The maximum can reach 39°C (102°F), while the minimum can be as low as 12°C (53°F). This makes Shiner an ideal destination for travelers seeking warm weather, but it's important to be prepared for both the heat and cooler evenings.

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

The chart illustrates September temperature patterns in Shiner, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shiner, September typically has an average temperature of 27°C (82°F), with highs reaching up to 39°C (102°F) and lows dropping to around 12°C (53°F).

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

September Precipitation in Shiner

In Shiner in September, the precipitation amount is 108 mm (4.3 in) over the course of 12 days.

September Precipitation Trends in Shiner

The chart displays monthly precipitation patterns in Shiner, 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 Shiner, September typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 12 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 Shiner

In Shiner in September, humidity is 73%. With an average temperature of 27°C (82°F), this humidity feels like you're walking through a warm, thick blanket, making travel feel sticky and requiring frequent breaks to stay refreshed.

September Average Humidity in Shiner

This chart illustrates the average monthly humidity levels in Shiner, 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 Shiner is approximately 73%, 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 Shiner

In Shiner in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Shiner.

Maximum UV Index Levels in Shiner for September

The chart shows the monthly maximum UV Index (UVI) for Shiner 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 Shiner typically reaches 10, which falls under the very high exposure category.

Data source: Shiner 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 Shiner Compares to Other Months

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

This table compares monthly weather conditions in Shiner, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	54 mm (2.1 inches)	78%	moderate
February Weather	13°C (57°F)	62 mm (2.4 inches)	81%	very high
March Weather	19°C (66°F)	64 mm (2.5 inches)	76%	very high
April Weather	21°C (71°F)	105 mm (4.1 inches)	79%	extreme
May Weather	26°C (78°F)	133 mm (5.2 inches)	79%	extreme
June Weather	28°C (83°F)	106 mm (4.2 inches)	74%	extreme
July Weather	30°C (86°F)	86 mm (3.4 inches)	71%	extreme
August Weather	30°C (87°F)	97 mm (3.8 inches)	68%	extreme
September Weather	27°C (82°F)	108 mm (4.3 inches)	73%	very high
October Weather	23°C (73°F)	70 mm (2.8 inches)	75%	very high
November Weather	17°C (63°F)	59 mm (2.3 inches)	78%	high
December Weather	14°C (57°F)	69 mm (2.7 inches)	84%	moderate