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April Weather in Southbury, United States

Last updated: June 24, 2025

In April, the average temperature in Southbury, United States hovers around 9°C (49°F). Expect chilly nights with a minimum of -4°C (26°F), while the days can warm up to a pleasant 28°C (83°F). During this month, you'll experience approximately 129 mm (5.1 in) of precipitation over 13 days, contributing to an average humidity level of 78%.

April Temperature in Southbury

In April in Southbury, the average temperature is 9°C (49°F). Maximums can reach 28°C (83°F), and minimums can drop as low as -4°C (26°F). This varied climate makes Southbury a great destination for travelers seeking both warm and cool experiences.

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

The chart illustrates April temperature patterns in Southbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Southbury, April typically has an average temperature of 9°C (49°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec303338495969747366564335
Data source: Temperature data for Southbury 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 Southbury

In Southbury in April, the precipitation amount is 129 mm (5.1 in) over the course of 13 days.

April Precipitation Trends in Southbury

The chart displays monthly precipitation patterns in Southbury, 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 Southbury, April typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec71969112911210314310611414394121
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Southbury

In Southbury in April, humidity is 78%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling, as the cool air combines with the moisture to create a brisk and invigorating atmosphere.

April Average Humidity in Southbury

This chart illustrates the average monthly humidity levels in Southbury, 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 Southbury is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Southbury

In Southbury in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Southbury.

Maximum UV Index Levels in Southbury for April

The chart shows the monthly maximum UV Index (UVI) for Southbury 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 Southbury typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Southbury 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 Southbury Compares to Other Months

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

This table compares monthly weather conditions in Southbury, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)71 mm (2.8 inches)84%moderate
February Weather1°C (33°F)96 mm (3.8 inches)82%moderate
March Weather4°C (39°F)91 mm (3.6 inches)81%high
April Weather9°C (49°F)129 mm (5.1 inches)78%very high
May Weather15°C (59°F)112 mm (4.4 inches)69%very high
June Weather20°C (69°F)102 mm (4.0 inches)69%very high
July Weather24°C (75°F)143 mm (5.6 inches)62%very high
August Weather23°C (73°F)106 mm (4.2 inches)65%very high
September Weather19°C (67°F)114 mm (4.5 inches)68%very high
October Weather14°C (57°F)143 mm (5.6 inches)74%high
November Weather6°C (43°F)94 mm (3.7 inches)82%moderate
December Weather1°C (35°F)121 mm (4.8 inches)80%low

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