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September Weather in Sweet Home, United States

Last updated: June 24, 2025

In Sweet Home, United States, the average temperature in September hovers around 17°C (62°F). Expect a range from a chilly 4°C (39°F) to a warm 35°C (95°F). This month also brings about 101 mm (4.0 in) of precipitation over approximately 7 days, with a comfortable average humidity of 71%.

September Temperature in Sweet Home

In September in Sweet Home, the average temperature is 17°C (62°F). Maximums can reach 35°C (95°F), while minimums can drop to 4°C (39°F). Be prepared for a variety of weather conditions to make the most of your travel experience.

September Weather in Sweet Home: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sweet Home, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sweet Home, September typically has an average temperature of 17°C (62°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec403943495562686962514540
Data source: Temperature data for Sweet Home 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 Sweet Home

In Sweet Home in September, the precipitation amount is 101 mm (4.0 in) over a period of 7 days.

September Precipitation Trends in Sweet Home

The chart displays monthly precipitation patterns in Sweet Home, 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 Sweet Home, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec202246175172836549101152195247
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sweet Home

In Sweet Home in September, humidity is 71%. With an average temperature of 17°C (62°F), this humidity feels like a warm embrace that can leave you feeling a bit sticky, making outdoor exploration both refreshing and slightly uncomfortable.

September Average Humidity in Sweet Home

This chart illustrates the average monthly humidity levels in Sweet Home, 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 Sweet Home is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%85%83%83%84%82%74%71%81%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sweet Home

In Sweet Home 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 Sweet Home.

Maximum UV Index Levels in Sweet Home for September

The chart shows the monthly maximum UV Index (UVI) for Sweet Home 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 Sweet Home typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246710101098532
Data source: Sweet Home 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 Sweet Home Compares to Other Months

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

This table compares monthly weather conditions in Sweet Home, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (40°F)202 mm (8.0 inches)85%low
February Weather4°C (40°F)245 mm (9.7 inches)84%moderate
March Weather6°C (44°F)175 mm (6.9 inches)85%high
April Weather9°C (49°F)172 mm (6.8 inches)83%high
May Weather13°C (55°F)83 mm (3.3 inches)83%very high
June Weather17°C (62°F)65 mm (2.6 inches)83%very high
July Weather20°C (69°F)4 mm (0.2 inches)82%very high
August Weather21°C (69°F)9 mm (0.4 inches)74%very high
September Weather17°C (62°F)101 mm (4.0 inches)71%very high
October Weather11°C (52°F)152 mm (6.0 inches)81%moderate
November Weather7°C (45°F)195 mm (7.7 inches)87%moderate
December Weather4°C (40°F)247 mm (9.7 inches)87%low

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