September Weather in Linn, United States

Last updated: June 24, 2025

In September, the average temperature in Linn, United States hovers around 22°C (72°F), making it a comfortable time to visit. However, temperatures can range from a refreshing 7°C (46°F) to a warm 35°C (95°F). Expect 55 mm (2.2 in) of precipitation spread over 6 days, accompanied by an average humidity level of 76%. Embrace the climate while exploring the vibrant charm of this destination!

September Temperature in Linn

In September in Linn, the average temperature is 22°C (72°F). Maximums can reach 35°C (95°F), while minimums can dip as low as 7°C (46°F). This variability makes it essential to pack both light clothing for the warm days and layers for cooler evenings when traveling.

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

The chart illustrates September temperature patterns in Linn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Linn, September typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (46°F).

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

September Precipitation in Linn

In Linn in September, the total precipitation amount is 55 mm (2.2 in) spread over 6 days.

September Precipitation Trends in Linn

The chart displays monthly precipitation patterns in Linn, 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 Linn, September typically receives around 55 mm (2.2 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 Linn

In Linn in September humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

September Average Humidity in Linn

This chart illustrates the average monthly humidity levels in Linn, 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 Linn is approximately 76%, 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 Linn

In Linn in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Linn.

Maximum UV Index Levels in Linn for September

The chart shows the monthly maximum UV Index (UVI) for Linn 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 Linn typically reaches 9, which falls under the very high exposure category.

Data source: Linn 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 Linn Compares to Other Months

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

This table compares monthly weather conditions in Linn, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	73 mm (2.9 inches)	82%	moderate
February Weather	2°C (36°F)	73 mm (2.9 inches)	80%	moderate
March Weather	8°C (47°F)	126 mm (5.0 inches)	80%	high
April Weather	13°C (55°F)	123 mm (4.8 inches)	80%	very high
May Weather	19°C (66°F)	163 mm (6.4 inches)	82%	very high
June Weather	24°C (76°F)	89 mm (3.5 inches)	83%	extreme
July Weather	26°C (80°F)	98 mm (3.8 inches)	81%	extreme
August Weather	24°C (76°F)	113 mm (4.5 inches)	80%	very high
September Weather	22°C (72°F)	55 mm (2.2 inches)	76%	very high
October Weather	15°C (59°F)	95 mm (3.7 inches)	76%	high
November Weather	7°C (45°F)	63 mm (2.5 inches)	85%	moderate
December Weather	4°C (40°F)	46 mm (1.8 inches)	86%	moderate