September Weather in Randolph, United States

Last updated: June 24, 2025

In Randolph, United States, the average temperature in September is a pleasant 19°C (67°F). During this time, temperatures can range from a cool 5°C (41°F) to a warm 34°C (93°F). Expect about 81 mm (3.2 in) of precipitation over 8 days, contributing to an average humidity of 75%.

September Temperature in Randolph

In September in Randolph, the average temperature is 19°C (67°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 5°C (41°F). This varied climate makes Randolph an ideal destination for travelers looking to experience both warm and cooler weather.

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

The chart illustrates September temperature patterns in Randolph, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Randolph, September typically has an average temperature of 19°C (67°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Randolph

In Randolph in September, the precipitation amount is 81 mm (3.2 in) over the course of 8 days.

September Precipitation Trends in Randolph

The chart displays monthly precipitation patterns in Randolph, 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 Randolph, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 8 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 Randolph

In Randolph in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

September Average Humidity in Randolph

This chart illustrates the average monthly humidity levels in Randolph, 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 Randolph is approximately 75%, 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 Randolph

In Randolph in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Randolph.

Maximum UV Index Levels in Randolph for September

The chart shows the monthly maximum UV Index (UVI) for Randolph 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 Randolph typically reaches 8, which falls under the very high exposure category.

Data source: Randolph 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 Randolph Compares to Other Months

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

This table compares monthly weather conditions in Randolph, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	27 mm (1.1 inches)	80%	moderate
February Weather	-5°C (23°F)	26 mm (1.0 inches)	84%	moderate
March Weather	3°C (38°F)	82 mm (3.2 inches)	75%	high
April Weather	8°C (47°F)	84 mm (3.3 inches)	79%	very high
May Weather	15°C (60°F)	157 mm (6.2 inches)	74%	very high
June Weather	23°C (74°F)	96 mm (3.8 inches)	81%	extreme
July Weather	25°C (76°F)	87 mm (3.4 inches)	82%	very high
August Weather	23°C (73°F)	101 mm (4.0 inches)	80%	very high
September Weather	19°C (67°F)	81 mm (3.2 inches)	75%	very high
October Weather	10°C (50°F)	80 mm (3.2 inches)	77%	high
November Weather	3°C (38°F)	23 mm (0.9 inches)	85%	moderate
December Weather	-2°C (29°F)	45 mm (1.8 inches)	83%	low