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September Weather in Fargo, United States

Last updated: June 24, 2025

In September, the average temperature in Fargo, United States is a comfortable 16°C (61°F). However, be prepared for temperature swings, as it can drop to a chilly -2°C (29°F) or soar up to a warm 32°C (91°F). Expect precipitation of about 78 mm (3.1 in) over 9 days, contributing to an average humidity of 77%. Make sure to plan accordingly for this diverse weather!

September Temperature in Fargo

In September in Fargo, the average temperature is 16°C (61°F). The maximum can reach 32°C (91°F), and the minimum can be as low as -2°C (29°F). Be prepared for a wide range of temperatures when traveling to Fargo in September.

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

The chart illustrates September temperature patterns in Fargo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fargo, September typically has an average temperature of 16°C (61°F), with highs reaching up to 32°C (91°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec111028405770736961442918
Data source: Temperature data for Fargo 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 Fargo

In Fargo in September, the precipitation amount is 78 mm (3.1 in) over the course of 9 days.

September Precipitation Trends in Fargo

The chart displays monthly precipitation patterns in Fargo, 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 Fargo, September typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1821274952100709478852041
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fargo

In Fargo in September humidity is 77%. With an average temperature of 16°C (61°F), this humidity feels like a slight heaviness in the air, making every step feel a touch more effortful while traveling. The dampness clings to your skin, adding a layer of discomfort, yet the mild temperature invites you to explore the surroundings, blending the challenge of the humidity with an opportunity for a refreshing adventure.

September Average Humidity in Fargo

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

In Fargo 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 Fargo.

Maximum UV Index Levels in Fargo for September

The chart shows the monthly maximum UV Index (UVI) for Fargo 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 Fargo typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457810987532
Data source: Fargo 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 Fargo Compares to Other Months

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

This table compares monthly weather conditions in Fargo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-12°C (11°F)18 mm (0.7 inches)90%low
February Weather-12°C (11°F)20 mm (0.8 inches)92%moderate
March Weather-2°C (29°F)27 mm (1.0 inches)85%moderate
April Weather5°C (40°F)49 mm (1.9 inches)81%high
May Weather14°C (57°F)52 mm (2.1 inches)75%very high
June Weather21°C (70°F)100 mm (3.9 inches)79%very high
July Weather23°C (73°F)70 mm (2.7 inches)76%very high
August Weather20°C (69°F)94 mm (3.7 inches)78%very high
September Weather16°C (61°F)78 mm (3.1 inches)77%high
October Weather7°C (45°F)85 mm (3.3 inches)79%moderate
November Weather-2°C (29°F)20 mm (0.8 inches)86%moderate
December Weather-8°C (19°F)41 mm (1.6 inches)86%low

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