September Weather in Newton, United States

Last updated: June 24, 2025

In September, the average temperature in Newton, United States hovers around 26°C (79°F), but can vary significantly; you might experience a cool minimum of 13°C (56°F) or a sweltering maximum of 38°C (101°F). Expect 157 mm (6.2 in) of precipitation spread over about 13 days, contributing to an average humidity level of 72%.

September Temperature in Newton

In September in Newton, the average temperature is 26°C (79°F). Maximums can reach 38°C (101°F), while minimums can drop to as low as 13°C (56°F). This makes Newton a great travel destination for those who enjoy warm weather with a cool reprieve during the night.

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

The chart illustrates September temperature patterns in Newton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newton, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (101°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Newton

In Newton in September, the total precipitation amount is 157 mm (6.2 in) spread over 13 days.

September Precipitation Trends in Newton

The chart displays monthly precipitation patterns in Newton, 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 Newton, September typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 13 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 Newton

In Newton 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 Newton

This chart illustrates the average monthly humidity levels in Newton, 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 Newton 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 Newton

In Newton 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 Newton.

Maximum UV Index Levels in Newton for September

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

Data source: Newton 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 Newton Compares to Other Months

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

This table compares monthly weather conditions in Newton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	104 mm (4.1 inches)	81%	moderate
February Weather	13°C (56°F)	118 mm (4.7 inches)	81%	very high
March Weather	18°C (64°F)	87 mm (3.4 inches)	79%	very high
April Weather	20°C (68°F)	141 mm (5.5 inches)	80%	very high
May Weather	24°C (76°F)	210 mm (8.3 inches)	81%	extreme
June Weather	27°C (81°F)	160 mm (6.3 inches)	76%	extreme
July Weather	28°C (83°F)	116 mm (4.6 inches)	73%	extreme
August Weather	28°C (83°F)	193 mm (7.6 inches)	71%	extreme
September Weather	26°C (79°F)	157 mm (6.2 inches)	72%	very high
October Weather	22°C (71°F)	127 mm (5.0 inches)	73%	very high
November Weather	15°C (60°F)	64 mm (2.5 inches)	83%	high
December Weather	13°C (56°F)	133 mm (5.2 inches)	88%	moderate