September Weather in North Windham, United States

Last updated: June 24, 2025

In September, the average temperature in North Windham, United States hovers around 18°C (64°F), with minimums dipping to 4°C (39°F) and maximums soaring to 32°C (90°F). You'll experience an average humidity of 71%, along with 65 mm (2.6 in) of precipitation spread over 7 days. Prepare for a mix of conditions as you enjoy your time in this vibrant locale!

September Temperature in North Windham

In September in North Windham, the average temperature is 18°C (64°F). Maximum can reach 32°C (90°F) and minimum can be as low as 4°C (39°F). This climate makes North Windham a comfortable destination for travelers looking to enjoy a variety of outdoor activities.

September Weather in North Windham: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in North Windham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Windham, September typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (90°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in North Windham

In North Windham in September, the total precipitation amount is 65 mm (2.6 in) over a span of 7 days.

September Precipitation Trends in North Windham

The chart displays monthly precipitation patterns in North Windham, 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 North Windham, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 7 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 North Windham

In North Windham in September, humidity is 71%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making traveling a bit sticky but still pleasant as the warmth envelops you, urging you to explore the vibrant surroundings while staying hydrated.

September Average Humidity in North Windham

This chart illustrates the average monthly humidity levels in North Windham, 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 North Windham is approximately 71%, 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 North Windham

In North Windham in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in North Windham.

Maximum UV Index Levels in North Windham for September

The chart shows the monthly maximum UV Index (UVI) for North Windham 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 North Windham typically reaches 7, which falls under the high exposure category.

Data source: North Windham 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 North Windham Compares to Other Months

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

This table compares monthly weather conditions in North Windham, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	82 mm (3.2 inches)	86%	low
February Weather	-3°C (27°F)	90 mm (3.5 inches)	84%	moderate
March Weather	1°C (34°F)	78 mm (3.1 inches)	82%	moderate
April Weather	7°C (45°F)	120 mm (4.7 inches)	80%	high
May Weather	13°C (56°F)	73 mm (2.9 inches)	72%	very high
June Weather	19°C (66°F)	78 mm (3.1 inches)	72%	very high
July Weather	22°C (72°F)	138 mm (5.4 inches)	67%	very high
August Weather	22°C (71°F)	79 mm (3.1 inches)	66%	very high
September Weather	18°C (64°F)	65 mm (2.6 inches)	71%	high
October Weather	12°C (53°F)	126 mm (5.0 inches)	78%	moderate
November Weather	4°C (40°F)	108 mm (4.2 inches)	84%	moderate
December Weather	-1°C (30°F)	120 mm (4.7 inches)	81%	low