nomadseason

September Weather in Stonewall, United States

Last updated: June 24, 2025

In September, the average temperature in Stonewall, United States reaches a comfortable 26°C (79°F). Daily temperatures can vary, with a low of 12°C (54°F) and soaring up to a high of 39°C (102°F). Expect some rain, as the area experiences about 83 mm (3.3 in) of precipitation over 9 days. With an average humidity level of 63%, it’s a month that blends warmth and refreshing breezes.

September Temperature in Stonewall

In September in Stonewall, the average temperature is 26°C (79°F). The maximum can reach 39°C (102°F) and the minimum can be as low as 12°C (54°F). Be prepared for a warm climate, with occasional cool evenings, making it an ideal time for both outdoor activities and relaxation.

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

The chart illustrates September temperature patterns in Stonewall, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stonewall, September typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (102°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec495261657581838379685753
Data source: Temperature data for Stonewall generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Stonewall

In Stonewall in September, the precipitation amount is 83 mm (3.3 in) over the course of 9 days.

September Precipitation Trends in Stonewall

The chart displays monthly precipitation patterns in Stonewall, 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 Stonewall, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec109159143181153109901198310880134
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Stonewall

In Stonewall in September humidity is 63%. With average temperature 26°C (79°F), this humidity feels like a warm embrace, making it perfect for leisurely strolls or exploring local attractions, though be prepared for a slight stickiness that may prompt you to seek shade or refreshing beverages along the way.

September Average Humidity in Stonewall

This chart illustrates the average monthly humidity levels in Stonewall, 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 Stonewall is approximately 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%78%79%81%77%72%65%63%70%82%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Stonewall

In Stonewall 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 Stonewall.

Maximum UV Index Levels in Stonewall for September

The chart shows the monthly maximum UV Index (UVI) for Stonewall 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 Stonewall typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111112111110864
Data source: Stonewall 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 Stonewall Compares to Other Months

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

This table compares monthly weather conditions in Stonewall, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)109 mm (4.3 inches)82%moderate
February Weather11°C (52°F)159 mm (6.3 inches)80%high
March Weather16°C (61°F)143 mm (5.6 inches)78%very high
April Weather19°C (66°F)181 mm (7.1 inches)79%extreme
May Weather24°C (75°F)153 mm (6.0 inches)81%extreme
June Weather27°C (81°F)109 mm (4.3 inches)77%extreme
July Weather29°C (84°F)90 mm (3.5 inches)72%extreme
August Weather29°C (84°F)119 mm (4.7 inches)65%extreme
September Weather26°C (79°F)83 mm (3.3 inches)63%very high
October Weather20°C (69°F)108 mm (4.3 inches)70%very high
November Weather14°C (57°F)80 mm (3.2 inches)82%high
December Weather12°C (53°F)134 mm (5.3 inches)88%moderate

Compare Stonewall's Climate with Cities Worldwide