September Weather in Friend, United States

Last updated: June 24, 2025

In Friend, United States, the average temperature in September hovers around 21°C (70°F). Expect a minimum of 5°C (41°F) and a maximum that soars up to 36°C (98°F). This month also brings about 75 mm (3.0 in) of precipitation spread over 8 days, accompanied by an average humidity of 75%. Whether you're planning for a sunny outing or a rainy day, be prepared for a mix of weather!

September Temperature in Friend

In September in Friend, the average temperature is 21°C (70°F). Maximums can reach 36°C (98°F) and minimums can be as low as 5°C (41°F). This variation makes it essential for travelers to pack accordingly for both warm and cooler weather during their visit.

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

The chart illustrates September temperature patterns in Friend, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Friend, September typically has an average temperature of 21°C (70°F), with highs reaching up to 36°C (98°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Friend

In Friend in September, the total precipitation amount is 75 mm (3.0 in) over the course of 8 days.

September Precipitation Trends in Friend

The chart displays monthly precipitation patterns in Friend, 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 Friend, September typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 8 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 Friend

In Friend in September, humidity is 75%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that makes exploring the area feel slightly sticky, requiring travelers to stay hydrated and take occasional breaks in the shade to fully enjoy their adventures.

September Average Humidity in Friend

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

In Friend 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 Friend.

Maximum UV Index Levels in Friend for September

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

Data source: Friend 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 Friend Compares to Other Months

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

This table compares monthly weather conditions in Friend, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	32 mm (1.3 inches)	76%	moderate
February Weather	-3°C (27°F)	25 mm (1.0 inches)	80%	moderate
March Weather	5°C (42°F)	92 mm (3.6 inches)	73%	high
April Weather	10°C (51°F)	47 mm (1.9 inches)	74%	very high
May Weather	17°C (63°F)	150 mm (5.9 inches)	78%	very high
June Weather	25°C (76°F)	98 mm (3.9 inches)	82%	extreme
July Weather	26°C (79°F)	56 mm (2.2 inches)	83%	very high
August Weather	24°C (75°F)	76 mm (3.0 inches)	80%	very high
September Weather	21°C (70°F)	75 mm (3.0 inches)	75%	very high
October Weather	12°C (53°F)	100 mm (3.9 inches)	75%	high
November Weather	5°C (41°F)	26 mm (1.0 inches)	82%	moderate
December Weather	0°C (33°F)	40 mm (1.6 inches)	83%	moderate