nomadseason

September Weather in Sisseton, United States

Last updated: June 24, 2025

In September, the average temperature in Sisseton, United States is a pleasant 17°C (62°F), with temperatures ranging from a chilly 0°C (33°F) to a warm 32°C (91°F). During this time, you can expect about 81 mm (3.2 in) of precipitation over 9 days, accompanied by an average humidity of 82%. Whether you're exploring or relaxing, pack accordingly for a well-rounded experience!

September Temperature in Sisseton

In September in Sisseton, the average temperature is 17°C (62°F). Maximums can reach 32°C (91°F) and minimums can be as low as 0°C (33°F). This variation makes it essential for travelers to pack layers to accommodate both warm and cool conditions.

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

The chart illustrates September temperature patterns in Sisseton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sisseton, September typically has an average temperature of 17°C (62°F), with highs reaching up to 32°C (91°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec141330405770736962463222
Data source: Temperature data for Sisseton generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sisseton

In Sisseton in September, the precipitation amount is 81 mm (3.2 in) spread over a duration of 9 days.

September Precipitation Trends in Sisseton

The chart displays monthly precipitation patterns in Sisseton, 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 Sisseton, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2018375877818813081792338
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Sisseton

In Sisseton in September, humidity is 82%. With an average temperature of 17°C (62°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and the air thicker, which can be quite exhausting for traveling.

September Average Humidity in Sisseton

This chart illustrates the average monthly humidity levels in Sisseton, 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 Sisseton is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sisseton

In Sisseton 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 Sisseton.

Maximum UV Index Levels in Sisseton for September

The chart shows the monthly maximum UV Index (UVI) for Sisseton 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 Sisseton typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3567910997532
Data source: Sisseton 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 Sisseton Compares to Other Months

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

This table compares monthly weather conditions in Sisseton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)20 mm (0.8 inches)85%moderate
February Weather-10°C (13°F)18 mm (0.7 inches)89%moderate
March Weather-1°C (30°F)37 mm (1.4 inches)81%high
April Weather5°C (41°F)57 mm (2.3 inches)82%high
May Weather14°C (57°F)77 mm (3.0 inches)76%very high
June Weather21°C (70°F)81 mm (3.2 inches)81%very high
July Weather23°C (74°F)88 mm (3.5 inches)82%very high
August Weather21°C (70°F)129 mm (5.1 inches)83%very high
September Weather17°C (62°F)81 mm (3.2 inches)82%high
October Weather8°C (46°F)79 mm (3.1 inches)82%moderate
November Weather0°C (32°F)22 mm (0.9 inches)87%moderate
December Weather-5°C (23°F)38 mm (1.5 inches)84%low

Compare Sisseton's Climate with Cities Worldwide