September Weather in Needles, United States

Last updated: June 24, 2025

In September, the average temperature in Needles, United States soars to a balmy 31°C (88°F). However, temperatures can fluctuate dramatically, with a minimum of 14°C (58°F) and a scorching maximum of 47°C (116°F). Rainfall is light, with an average precipitation of just 9 mm (0.3 in) over the course of 1 day, while the average humidity sits at a comfortable 48%. Enjoy the warmth but be prepared for the occasional heatwave!

September Temperature in Needles

In September in Needles, the average temperature is 31°C (88°F). The maximum can reach 47°C (116°F), while the minimum can drop as low as 14°C (58°F). It's advisable to stay hydrated and plan outdoor activities during cooler parts of the day when visiting.

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

The chart illustrates September temperature patterns in Needles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Needles, September typically has an average temperature of 31°C (88°F), with highs reaching up to 47°C (116°F) and lows dropping to around 14°C (58°F).

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

September Precipitation in Needles

In Needles in September, the precipitation amount is 9 mm (0.3 in) over the course of 1 day.

September Precipitation Trends in Needles

The chart displays monthly precipitation patterns in Needles, 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 Needles, September typically receives around 9 mm (0.3 inches) of precipitation spread over approximately 1 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 Needles

In Needles in September humidity is 48%. With an average temperature of 31°C (88°F), this humidity feels like a warm embrace, making it pleasantly humid for traveling, but ensuring that frequent hydration and lightweight clothing are essential for comfort throughout the day.

September Average Humidity in Needles

This chart illustrates the average monthly humidity levels in Needles, 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 Needles is approximately 48%, 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 Needles

In Needles 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 Needles.

Maximum UV Index Levels in Needles for September

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

Data source: Needles 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 Needles Compares to Other Months

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

This table compares monthly weather conditions in Needles, 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)	19 mm (0.8 inches)	77%	moderate
February Weather	14°C (57°F)	18 mm (0.7 inches)	80%	high
March Weather	18°C (64°F)	23 mm (0.9 inches)	68%	very high
April Weather	23°C (74°F)	2 mm (0.1 inches)	58%	very high
May Weather	27°C (81°F)	3 mm (0.1 inches)	45%	extreme
June Weather	33°C (92°F)	1 mm (0.0 inches)	31%	extreme
July Weather	36°C (97°F)	15 mm (0.6 inches)	27%	extreme
August Weather	36°C (96°F)	8 mm (0.3 inches)	30%	extreme
September Weather	31°C (88°F)	9 mm (0.3 inches)	48%	very high
October Weather	23°C (74°F)	9 mm (0.4 inches)	59%	high
November Weather	17°C (63°F)	23 mm (0.9 inches)	70%	moderate
December Weather	12°C (53°F)	13 mm (0.5 inches)	77%	moderate