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September Weather in Wahpeton, United States

Last updated: June 24, 2025

In September, the average temperature in Wahpeton, United States is a mild 17°C (62°F). However, temperatures can fluctuate significantly, with a minimum of -1°C (31°F) and a maximum of 32°C (90°F). Expect an average precipitation of 85 mm (3.3 in) spread over 8 days, coupled with a relatively high humidity level of 77%.

September Temperature in Wahpeton

In September in Wahpeton, the average temperature is 17°C (62°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as -1°C (31°F). Be sure to pack for a range of temperatures to enjoy your travels comfortably.

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

The chart illustrates September temperature patterns in Wahpeton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wahpeton, September typically has an average temperature of 17°C (62°F), with highs reaching up to 32°C (90°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec121230415771736962453020
Data source: Temperature data for Wahpeton 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 Wahpeton

In Wahpeton in September, the precipitation amount is 85 mm (3.3 in) over the course of 8 days.

September Precipitation Trends in Wahpeton

The chart displays monthly precipitation patterns in Wahpeton, 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 Wahpeton, September typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1821315669788111885842037
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Wahpeton

In Wahpeton in September humidity is 77%. With an average temperature of 17°C (62°F), this humidity feels like a warm embrace, creating a lush, almost tropical atmosphere that can be quite stifling for traveling, making it essential to stay hydrated and take frequent breaks in the shade.

September Average Humidity in Wahpeton

This chart illustrates the average monthly humidity levels in Wahpeton, 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 Wahpeton is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%92%85%81%75%79%77%78%77%79%86%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Wahpeton

In Wahpeton 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 Wahpeton.

Maximum UV Index Levels in Wahpeton for September

The chart shows the monthly maximum UV Index (UVI) for Wahpeton 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 Wahpeton typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Wahpeton 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 Wahpeton Compares to Other Months

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

This table compares monthly weather conditions in Wahpeton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)18 mm (0.7 inches)90%low
February Weather-11°C (13°F)21 mm (0.8 inches)92%moderate
March Weather-1°C (30°F)31 mm (1.2 inches)85%moderate
April Weather5°C (41°F)56 mm (2.2 inches)81%high
May Weather14°C (58°F)69 mm (2.7 inches)75%very high
June Weather21°C (71°F)78 mm (3.1 inches)79%very high
July Weather23°C (74°F)81 mm (3.2 inches)76%very high
August Weather21°C (70°F)118 mm (4.6 inches)78%very high
September Weather17°C (62°F)85 mm (3.3 inches)77%high
October Weather7°C (45°F)84 mm (3.3 inches)79%moderate
November Weather-1°C (31°F)20 mm (0.8 inches)86%moderate
December Weather-7°C (21°F)37 mm (1.5 inches)86%low

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