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April Weather in Mandan, United States

Last updated: June 24, 2025

In April, the average temperature in Mandan, United States hovers around 4°C (40°F). However, temperatures can fluctuate dramatically, dipping as low as -18°C (0°F) and soaring up to 25°C (78°F). Expect 27 mm (1.1 in) of precipitation spread over 6 days, coupled with an average humidity of 75%.

April Temperature in Mandan

In April in Mandan, the average temperature is 4°C (40°F). Maximums can reach 25°C (78°F), while minimums can drop as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm clothing for the chilly nights and lighter layers for the warmer days.

April Weather in Mandan: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Mandan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mandan, April typically has an average temperature of 4°C (40°F), with highs reaching up to 25°C (78°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec151330405569737061443122
Data source: Temperature data for Mandan 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.

April Precipitation in Mandan

In Mandan in April, the precipitation amount is 27 mm (1.1 in) over a period of 6 days.

April Precipitation Trends in Mandan

The chart displays monthly precipitation patterns in Mandan, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Mandan, April typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec121626275264626056561622
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Mandan

In Mandan in April, humidity is 75%. With an average temperature of 4°C (40°F), this humidity feels like a chilly, damp embrace that can make outdoor activities uncomfortable, as the cold moisture seeps into your clothes and reduces your warmth, leaving you feeling more frigid than uplifting.

April Average Humidity in Mandan

This chart illustrates the average monthly humidity levels in Mandan, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Mandan is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%88%78%75%76%79%78%78%69%71%82%84%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Mandan

In Mandan in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Mandan.

Maximum UV Index Levels in Mandan for April

The chart shows the monthly maximum UV Index (UVI) for Mandan in April, 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 April, the maximum UV index in Mandan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2459810997532
Data source: Mandan April 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 April Weather in Mandan Compares to Other Months

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

This table compares monthly weather conditions in Mandan, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)12 mm (0.5 inches)84%low
February Weather-10°C (14°F)16 mm (0.6 inches)88%moderate
March Weather-1°C (30°F)26 mm (1.0 inches)78%moderate
April Weather4°C (40°F)27 mm (1.1 inches)75%very high
May Weather13°C (56°F)52 mm (2.0 inches)76%very high
June Weather20°C (69°F)63 mm (2.5 inches)79%very high
July Weather23°C (74°F)62 mm (2.4 inches)78%very high
August Weather21°C (70°F)60 mm (2.4 inches)78%very high
September Weather16°C (61°F)56 mm (2.2 inches)69%high
October Weather6°C (44°F)56 mm (2.2 inches)71%moderate
November Weather-1°C (31°F)16 mm (0.6 inches)82%moderate
December Weather-6°C (22°F)22 mm (0.9 inches)84%low

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