September Weather in Simpson, United States

Last updated: June 24, 2025

In Simpson, United States, the average temperature in September hovers around 26°C (79°F), creating a pleasant climate for outdoor activities. Temperatures can vary significantly, dipping to a minimum of 12°C (54°F) and soaring to a maximum of 39°C (102°F). Expect about 135 mm (5.3 in) of precipitation over 11 days, contributing to an average humidity level of 72%. Whether you're looking to bask in the sun or stay cozy indoors, September offers a unique mix of weather experiences!

September Temperature in Simpson

In September in Simpson, 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 Simpson: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Simpson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Simpson, 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).

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

September Precipitation in Simpson

In Simpson in September, the precipitation amount is 135 mm (5.3 in) over the course of 11 days.

September Precipitation Trends in Simpson

The chart displays monthly precipitation patterns in Simpson, 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 Simpson, September typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 11 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 Simpson

In Simpson in September, humidity is 72%. With an average temperature of 26°C (79°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel a bit more strenuous but also adding a tropical charm to your travels.

September Average Humidity in Simpson

This chart illustrates the average monthly humidity levels in Simpson, 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 Simpson is approximately 72%, 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 Simpson

In Simpson 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 Simpson.

Maximum UV Index Levels in Simpson for September

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

Data source: Simpson 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 Simpson Compares to Other Months

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

This table compares monthly weather conditions in Simpson, 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 (51°F)	109 mm (4.3 inches)	81%	moderate
February Weather	13°C (55°F)	136 mm (5.3 inches)	81%	high
March Weather	17°C (63°F)	95 mm (3.8 inches)	79%	very high
April Weather	19°C (67°F)	161 mm (6.3 inches)	80%	extreme
May Weather	24°C (75°F)	187 mm (7.3 inches)	81%	extreme
June Weather	27°C (80°F)	129 mm (5.1 inches)	76%	extreme
July Weather	28°C (82°F)	138 mm (5.4 inches)	73%	extreme
August Weather	28°C (82°F)	161 mm (6.3 inches)	71%	extreme
September Weather	26°C (79°F)	135 mm (5.3 inches)	72%	very high
October Weather	21°C (70°F)	126 mm (5.0 inches)	73%	very high
November Weather	14°C (58°F)	66 mm (2.6 inches)	83%	high
December Weather	12°C (54°F)	136 mm (5.3 inches)	88%	moderate