September Weather in Molalla, United States

Last updated: June 24, 2025

In September, the average temperature in Molalla, United States hovers around 17°C (63°F). Expect a minimum of 3°C (39°F) and a maximum of 34°C (94°F), providing a nice range for various activities. However, be prepared for 78 mm (3.1 in) of precipitation over 8 days, and remember to stay hydrated with an average humidity of 71%. Enjoy the diverse climate!

September Temperature in Molalla

In September in Molalla, the average temperature is 17°C (63°F). Maximums can reach 34°C (94°F) while minimums can drop to as low as 3°C (39°F). This variety in temperatures makes it essential for travelers to pack both warm and lightweight clothing to stay comfortable during their visit.

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

The chart illustrates September temperature patterns in Molalla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Molalla, September typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (39°F).

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

September Precipitation in Molalla

In Molalla in September, the total precipitation amount is 78 mm (3.1 in) over the course of 8 days.

September Precipitation Trends in Molalla

The chart displays monthly precipitation patterns in Molalla, 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 Molalla, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Molalla

In Molalla in September, humidity is 71%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet a bit sticky, so travelers should stay hydrated and take breaks in the shade.

September Average Humidity in Molalla

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

In Molalla 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 Molalla.

Maximum UV Index Levels in Molalla for September

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

Data source: Molalla 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 Molalla Compares to Other Months

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

This table compares monthly weather conditions in Molalla, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	176 mm (6.9 inches)	85%	low
February Weather	4°C (40°F)	219 mm (8.6 inches)	84%	moderate
March Weather	7°C (44°F)	154 mm (6.0 inches)	85%	high
April Weather	10°C (50°F)	140 mm (5.5 inches)	83%	high
May Weather	13°C (56°F)	70 mm (2.7 inches)	83%	very high
June Weather	17°C (63°F)	57 mm (2.2 inches)	83%	very high
July Weather	20°C (68°F)	7 mm (0.3 inches)	82%	very high
August Weather	21°C (69°F)	10 mm (0.4 inches)	74%	very high
September Weather	17°C (63°F)	78 mm (3.1 inches)	71%	very high
October Weather	11°C (52°F)	130 mm (5.1 inches)	81%	moderate
November Weather	7°C (45°F)	173 mm (6.8 inches)	87%	moderate
December Weather	5°C (40°F)	212 mm (8.3 inches)	87%	low