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May Weather in Southbury, United States

Last updated: June 24, 2025

In Southbury, United States, the average temperature in May hovers around 15°C (59°F). Expect a range between a chilly 0°C (33°F) and a warm 33°C (91°F). This month sees an average precipitation of 112 mm (4.4 in) spread over 14 days, coupled with an average humidity of 69%. Embrace the diverse climate!

May Temperature in Southbury

In May in Southbury, the average temperature is 15°C (59°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as 0°C (33°F). It's wise to pack both light clothing for warmer days and warmer layers for chilly evenings when traveling during this time.

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

The chart illustrates May 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, May typically has an average temperature of 15°C (59°F), with highs reaching up to 33°C (91°F) and lows dropping to around 0°C (33°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.

May Precipitation in Southbury

In Southbury in May, the precipitation amount is 112 mm (4.4 in) spread over 14 days.

May Precipitation Trends in Southbury

The chart displays monthly precipitation patterns in Southbury, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Southbury, May typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec71969112911210314310611414394121
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Southbury

In Southbury in May humidity is 69%. With an average temperature of 15°C (59°F), this humidity feels like a mild blanket wrapping around you, making it slightly uncomfortable for traveling; you'll likely find yourself seeking shade and refreshing drinks to stay cool as you explore.

May Average Humidity in Southbury

This chart illustrates the average monthly humidity levels in Southbury, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Southbury is approximately 69%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Southbury

In Southbury in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Southbury.

Maximum UV Index Levels in Southbury for May

The chart shows the monthly maximum UV Index (UVI) for Southbury in May, 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 May, the maximum UV index in Southbury typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Southbury May 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 May 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 May’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 May’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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