September Weather in Moultonborough, United States

Last updated: June 24, 2025

In Moultonborough, United States, the average temperature in September hovers around 17°C (62°F), creating a pleasant climate. Daily variations can be notable, with minimum temperatures dipping to 1°C (34°F) and maximums soaring to 31°C (88°F). Expect 68 mm (2.7 in) of precipitation over approximately 9 days, accompanied by an average humidity level of 71%, making it a month full of varied weather experiences.

September Temperature in Moultonborough

In September in Moultonborough, the average temperature is 17°C (62°F), with maximums reaching 31°C (88°F) and minimums dropping as low as 1°C (34°F). This diverse temperature range makes it essential for travelers to pack accordingly for both warm and cool weather conditions.

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

The chart illustrates September temperature patterns in Moultonborough, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Moultonborough, September typically has an average temperature of 17°C (62°F), with highs reaching up to 31°C (88°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in Moultonborough

In Moultonborough in September, the precipitation amount is 68 mm (2.7 in) spread over 9 days.

September Precipitation Trends in Moultonborough

The chart displays monthly precipitation patterns in Moultonborough, 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 Moultonborough, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 9 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 Moultonborough

In Moultonborough in September, humidity is 71%. With an average temperature of 17°C (62°F), this humidity feels like a warm embrace that can leave you feeling a bit sticky, making outdoor exploration both refreshing and slightly uncomfortable.

September Average Humidity in Moultonborough

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

In Moultonborough 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 Moultonborough.

Maximum UV Index Levels in Moultonborough for September

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

Data source: Moultonborough 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 Moultonborough Compares to Other Months

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

This table compares monthly weather conditions in Moultonborough, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	79 mm (3.1 inches)	86%	moderate
February Weather	-5°C (24°F)	88 mm (3.5 inches)	84%	moderate
March Weather	-1°C (30°F)	76 mm (3.0 inches)	82%	moderate
April Weather	6°C (43°F)	137 mm (5.4 inches)	80%	very high
May Weather	13°C (55°F)	85 mm (3.4 inches)	72%	very high
June Weather	18°C (65°F)	102 mm (4.0 inches)	72%	very high
July Weather	21°C (70°F)	145 mm (5.7 inches)	67%	very high
August Weather	20°C (69°F)	95 mm (3.7 inches)	66%	very high
September Weather	17°C (62°F)	68 mm (2.7 inches)	71%	high
October Weather	10°C (51°F)	138 mm (5.4 inches)	78%	moderate
November Weather	2°C (36°F)	121 mm (4.8 inches)	84%	moderate
December Weather	-3°C (26°F)	127 mm (5.0 inches)	81%	low