September Weather in Kennebec, United States

Last updated: June 24, 2025

In September, the average temperature in Kennebec, United States is a pleasant 19°C (66°F). You'll experience a range of temperatures, with lows of 3°C (38°F) and highs reaching 36°C (96°F). Rainfall is anticipated, with an average precipitation of 62 mm (2.4 in) over 6 days, adding to the average humidity of 75%. Be prepared for a mix of warmth and occasional showers!

September Temperature in Kennebec

In September in Kennebec, the average temperature is 19°C (66°F). Maximum temperatures can reach 36°C (96°F), while minimums can drop to as low as 3°C (38°F). Be prepared for a wide range of weather conditions during your travels!

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

The chart illustrates September temperature patterns in Kennebec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kennebec, September typically has an average temperature of 19°C (66°F), with highs reaching up to 36°C (96°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Kennebec

In Kennebec in September, the precipitation amount is 62 mm (2.4 in), spread over the course of 6 days.

September Precipitation Trends in Kennebec

The chart displays monthly precipitation patterns in Kennebec, 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 Kennebec, September typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 6 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 Kennebec

In Kennebec in September humidity is 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

September Average Humidity in Kennebec

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

In Kennebec 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 Kennebec.

Maximum UV Index Levels in Kennebec for September

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

Data source: Kennebec 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 Kennebec Compares to Other Months

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

This table compares monthly weather conditions in Kennebec, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	17 mm (0.7 inches)	77%	low
February Weather	-7°C (19°F)	20 mm (0.8 inches)	81%	moderate
March Weather	1°C (35°F)	44 mm (1.8 inches)	71%	moderate
April Weather	7°C (44°F)	57 mm (2.2 inches)	75%	high
May Weather	15°C (59°F)	81 mm (3.2 inches)	74%	very high
June Weather	23°C (73°F)	76 mm (3.0 inches)	82%	very high
July Weather	25°C (78°F)	78 mm (3.1 inches)	84%	very high
August Weather	23°C (74°F)	53 mm (2.1 inches)	82%	very high
September Weather	19°C (66°F)	62 mm (2.4 inches)	75%	very high
October Weather	9°C (48°F)	53 mm (2.1 inches)	72%	moderate
November Weather	2°C (36°F)	12 mm (0.5 inches)	81%	moderate
December Weather	-3°C (26°F)	29 mm (1.1 inches)	79%	low