September Weather in Gouldsboro, United States

Last updated: June 24, 2025

In September, the average temperature in Gouldsboro, United States hovers around 18°C (64°F). Expect a minimum of 3°C (37°F) and a maximum of 31°C (88°F), making it a month of delightful variability. However, be prepared for some rain, as the area receives about 112 mm (4.4 in) of precipitation over 9 days. With an average humidity level of 66%, you'll want to enjoy the warmth while staying hydrated!

September Temperature in Gouldsboro

In September in Gouldsboro, the average temperature is 18°C (64°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 3°C (37°F). Overall, it's a great time to visit Gouldsboro for a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Gouldsboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gouldsboro, September typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (88°F) and lows dropping to around 3°C (37°F).

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

September Precipitation in Gouldsboro

In Gouldsboro in September, the total precipitation amount is 112 mm (4.4 in), occurring over a span of 9 days.

September Precipitation Trends in Gouldsboro

The chart displays monthly precipitation patterns in Gouldsboro, 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 Gouldsboro, September typically receives around 112 mm (4.4 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 Gouldsboro

In Gouldsboro in September humidity is 66%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace that can make outdoor activities slightly uncomfortable if you aren't properly hydrated. Travelers might find themselves longing for shade and refreshing drinks as they explore, but the pleasant temperatures still allow for enjoyable adventures with the right precautions.

September Average Humidity in Gouldsboro

This chart illustrates the average monthly humidity levels in Gouldsboro, 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 Gouldsboro is approximately 66%, 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 Gouldsboro

In Gouldsboro 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 Gouldsboro.

Maximum UV Index Levels in Gouldsboro for September

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

Data source: Gouldsboro 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 Gouldsboro Compares to Other Months

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

This table compares monthly weather conditions in Gouldsboro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	72 mm (2.8 inches)	87%	moderate
February Weather	-1°C (31°F)	101 mm (4.0 inches)	85%	moderate
March Weather	2°C (36°F)	93 mm (3.7 inches)	85%	high
April Weather	8°C (47°F)	111 mm (4.4 inches)	83%	very high
May Weather	15°C (58°F)	132 mm (5.2 inches)	75%	very high
June Weather	19°C (67°F)	114 mm (4.5 inches)	73%	very high
July Weather	22°C (73°F)	143 mm (5.6 inches)	65%	very high
August Weather	21°C (70°F)	154 mm (6.1 inches)	62%	very high
September Weather	18°C (64°F)	112 mm (4.4 inches)	66%	very high
October Weather	12°C (54°F)	130 mm (5.1 inches)	79%	high
November Weather	4°C (40°F)	91 mm (3.6 inches)	87%	moderate
December Weather	0°C (33°F)	95 mm (3.7 inches)	85%	low