September Weather in Millinocket, United States

Last updated: June 24, 2025

In September, the average temperature in Millinocket, United States hovers around 15°C (59°F), with a minimum of 0°C (32°F) and a peak of 32°C (90°F). During this month, expect around 93 mm (3.7 in) of precipitation spread over 9 days, contributing to an average humidity of 77%. Enjoy preparing for a delightful experience in this vibrant locale!

September Temperature in Millinocket

In September in Millinocket, the average temperature is 15°C (59°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 0°C (32°F). Be prepared for a range of temperatures, making it ideal for layering your travel attire.

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

The chart illustrates September temperature patterns in Millinocket, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millinocket, September typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (90°F) and lows dropping to around 0°C (32°F).

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

September Precipitation in Millinocket

In Millinocket in September, the precipitation amount is 93 mm (3.7 in) over the course of 9 days.

September Precipitation Trends in Millinocket

The chart displays monthly precipitation patterns in Millinocket, 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 Millinocket, September typically receives around 93 mm (3.7 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 Millinocket

In Millinocket in September, humidity is 77%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it essential to stay hydrated and choose light, breathable clothing for comfortable travel.

September Average Humidity in Millinocket

This chart illustrates the average monthly humidity levels in Millinocket, 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 Millinocket is approximately 77%, 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 Millinocket

In Millinocket 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 Millinocket.

Maximum UV Index Levels in Millinocket for September

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

Data source: Millinocket 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 Millinocket Compares to Other Months

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

This table compares monthly weather conditions in Millinocket, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	97 mm (3.8 inches)	88%	low
February Weather	-7°C (19°F)	89 mm (3.5 inches)	88%	moderate
March Weather	-3°C (27°F)	81 mm (3.2 inches)	85%	moderate
April Weather	4°C (39°F)	132 mm (5.2 inches)	81%	high
May Weather	11°C (52°F)	101 mm (4.0 inches)	76%	very high
June Weather	17°C (62°F)	83 mm (3.3 inches)	74%	very high
July Weather	20°C (68°F)	100 mm (3.9 inches)	74%	very high
August Weather	19°C (67°F)	89 mm (3.5 inches)	74%	very high
September Weather	15°C (59°F)	93 mm (3.7 inches)	77%	high
October Weather	8°C (47°F)	135 mm (5.3 inches)	82%	moderate
November Weather	1°C (33°F)	120 mm (4.7 inches)	85%	moderate
December Weather	-6°C (22°F)	122 mm (4.8 inches)	84%	low