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September Weather in Friendship, United States

Last updated: June 24, 2025

In September, the average temperature in Friendship, United States hovers around 18°C (64°F), with a minimum drop to 3°C (37°F) and peaks reaching 33°C (91°F). Expect approximately 98 mm (3.9 in) of precipitation across 10 days, accompanied by an average humidity of 79%. This blend of conditions creates a refreshing yet variable atmosphere, perfect for exploring the region!

September Temperature in Friendship

In September in Friendship, the average temperature is 18°C (64°F), with maximums reaching 33°C (91°F) and minimums dropping as low as 3°C (37°F). Travelers should be prepared for a wide range of temperatures, making layering an essential strategy for comfort during their visit.

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

The chart illustrates September temperature patterns in Friendship, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Friendship, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (91°F) and lows dropping to around 3°C (37°F).
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Data source: Temperature data for Friendship generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Friendship

In Friendship in September, the total precipitation amount is 98 mm (3.9 in) recorded over a span of 10 days.

September Precipitation Trends in Friendship

The chart displays monthly precipitation patterns in Friendship, 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 Friendship, September typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec40536191117112111113981024947
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Friendship

In Friendship in September, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

September Average Humidity in Friendship

This chart illustrates the average monthly humidity levels in Friendship, 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 Friendship is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Friendship

In Friendship 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 Friendship.

Maximum UV Index Levels in Friendship for September

The chart shows the monthly maximum UV Index (UVI) for Friendship 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 Friendship typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Friendship 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 Friendship Compares to Other Months

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

This table compares monthly weather conditions in Friendship, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)40 mm (1.6 inches)85%low
February Weather-7°C (20°F)53 mm (2.1 inches)85%moderate
March Weather1°C (34°F)61 mm (2.4 inches)85%moderate
April Weather7°C (44°F)91 mm (3.6 inches)85%very high
May Weather15°C (59°F)117 mm (4.6 inches)78%very high
June Weather21°C (70°F)112 mm (4.4 inches)80%very high
July Weather23°C (74°F)111 mm (4.4 inches)78%very high
August Weather21°C (70°F)113 mm (4.4 inches)76%very high
September Weather18°C (64°F)98 mm (3.9 inches)79%high
October Weather10°C (50°F)102 mm (4.0 inches)83%moderate
November Weather1°C (35°F)49 mm (1.9 inches)88%moderate
December Weather-3°C (27°F)47 mm (1.8 inches)81%low

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