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April Weather in Louiseville, Canada

Last updated: June 18, 2025

In Louiseville, Canada during April, the average temperature hovers around 4°C (40°F), bringing a chill to the air. Expect minimums that can plunge to -12°C (10°F), while the mercury might rise to a pleasant 21°C (71°F) on warmer days. Rainfall plays a role too, with 115 mm (4.5 in) expected over 11 days, contributing to an average humidity of 86%. Be prepared for a mix of cool and damp days!

April Temperature in Louiseville

In April in Louiseville, the average temperature is 4°C (40°F). Maximum temperatures can reach 21°C (71°F), while minimums can drop as low as -12°C (10°F). Be prepared for a wide range of temperatures when planning your travels.

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

The chart illustrates April temperature patterns in Louiseville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Louiseville, April typically has an average temperature of 4°C (40°F), with highs reaching up to 21°C (71°F) and lows dropping to around -12°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec151726405565716860483220
Data source: Temperature data for Louiseville 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 Louiseville

In Louiseville in April, the total precipitation amount is 115 mm (4.5 in) spread over 11 days.

April Precipitation Trends in Louiseville

The chart displays monthly precipitation patterns in Louiseville, 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 Louiseville, April typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec83828711692100891036412211595
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Louiseville

In Louiseville in April humidity is 86%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel cumbersome as you navigate through a thick, heavy air that clings to your skin.

April Average Humidity in Louiseville

This chart illustrates the average monthly humidity levels in Louiseville, 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 Louiseville is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%94%90%86%78%71%79%78%78%87%90%93%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Louiseville

In Louiseville 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 Louiseville.

Maximum UV Index Levels in Louiseville for April

The chart shows the monthly maximum UV Index (UVI) for Louiseville 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 Louiseville typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799887532
Data source: Louiseville 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 Louiseville Compares to Other Months

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

This table compares monthly weather conditions in Louiseville, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)83 mm (3.3 inches)95%low
February Weather-8°C (17°F)82 mm (3.2 inches)94%moderate
March Weather-3°C (27°F)87 mm (3.4 inches)90%moderate
April Weather4°C (40°F)115 mm (4.5 inches)86%high
May Weather13°C (56°F)92 mm (3.6 inches)77%very high
June Weather18°C (65°F)100 mm (3.9 inches)71%very high
July Weather22°C (71°F)89 mm (3.5 inches)79%very high
August Weather20°C (69°F)103 mm (4.1 inches)78%very high
September Weather15°C (60°F)64 mm (2.5 inches)78%high
October Weather9°C (48°F)122 mm (4.8 inches)87%moderate
November Weather0°C (33°F)115 mm (4.5 inches)90%moderate
December Weather-7°C (20°F)95 mm (3.7 inches)93%low

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