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April Weather in Brillion, United States

Last updated: June 24, 2025

In Brillion, United States during the month of April, the average temperature hovers around 6°C (43°F). Temperatures can range from a chilly -11°C (13°F) to a pleasant 25°C (77°F). Expect 98 mm (3.9 in) of precipitation over approximately 12 days, contributing to an average humidity level of a moisture-rich 84%.

April Temperature in Brillion

In April in Brillion, the average temperature is 6°C (43°F). Maximum temperatures can reach 25°C (77°F), while minima can drop to as low as -11°C (13°F). This wide temperature range makes it essential to pack layers and be prepared for both warm and chilly conditions when traveling.

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

The chart illustrates April temperature patterns in Brillion, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brillion, April typically has an average temperature of 6°C (43°F), with highs reaching up to 25°C (77°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec212133435668737063503627
Data source: Temperature data for Brillion 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 Brillion

In Brillion in April, the precipitation amount is 98 mm (3.9 in) over the course of 12 days.

April Precipitation Trends in Brillion

The chart displays monthly precipitation patterns in Brillion, 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 Brillion, April typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4347589810410311010169974851
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Brillion

In Brillion in April, humidity is 84%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor excursions uncomfortable and prompting travelers to seek refuge indoors or find warm, sheltered spots to enjoy their surroundings.

April Average Humidity in Brillion

This chart illustrates the average monthly humidity levels in Brillion, 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 Brillion is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Brillion

In Brillion in April, 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 Brillion.

Maximum UV Index Levels in Brillion for April

The chart shows the monthly maximum UV Index (UVI) for Brillion 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 Brillion typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Brillion 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 Brillion Compares to Other Months

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

This table compares monthly weather conditions in Brillion, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)43 mm (1.7 inches)89%low
February Weather-6°C (21°F)47 mm (1.9 inches)90%moderate
March Weather1°C (34°F)58 mm (2.3 inches)87%moderate
April Weather6°C (43°F)98 mm (3.9 inches)84%high
May Weather14°C (57°F)104 mm (4.1 inches)77%very high
June Weather20°C (68°F)103 mm (4.1 inches)75%very high
July Weather23°C (73°F)110 mm (4.3 inches)74%very high
August Weather21°C (70°F)101 mm (4.0 inches)73%very high
September Weather17°C (63°F)69 mm (2.7 inches)78%high
October Weather10°C (50°F)97 mm (3.8 inches)84%moderate
November Weather2°C (36°F)48 mm (1.9 inches)89%moderate
December Weather-3°C (27°F)51 mm (2.0 inches)87%low

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