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May Weather in Trumbull, United States

Last updated: June 24, 2025

In May, the average temperature in Trumbull, United States hovers around 15°C (59°F). Expect a range between a cool minimum of 2°C (35°F) and a balmy maximum of 30°C (86°F). With an average precipitation amount of 119 mm (4.7 in) over about 13 days, be prepared for some wet weather. The average humidity sits at 69%, contributing to a unique atmosphere that's both refreshing and invigorating.

May Temperature in Trumbull

In May in Trumbull, the average temperature is 15°C (59°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as 2°C (35°F). This variability makes it advisable for travelers to pack layers to comfortably accommodate both warm afternoons and chilly evenings.

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

The chart illustrates May temperature patterns in Trumbull, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trumbull, May typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (86°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec323539495969757468594537
Data source: Temperature data for Trumbull 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 Trumbull

In Trumbull in May, the precipitation amount is 119 mm (4.7 in) spread over 13 days.

May Precipitation Trends in Trumbull

The chart displays monthly precipitation patterns in Trumbull, 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 Trumbull, May typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec771149913511995132102105152101135
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Trumbull

In Trumbull 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 Trumbull

This chart illustrates the average monthly humidity levels in Trumbull, 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 Trumbull 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 Trumbull

In Trumbull 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 Trumbull.

Maximum UV Index Levels in Trumbull for May

The chart shows the monthly maximum UV Index (UVI) for Trumbull 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 Trumbull typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35681010998642
Data source: Trumbull 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 Trumbull Compares to Other Months

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

This table compares monthly weather conditions in Trumbull, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)77 mm (3.0 inches)84%moderate
February Weather1°C (35°F)114 mm (4.5 inches)82%moderate
March Weather4°C (40°F)99 mm (3.9 inches)81%high
April Weather9°C (49°F)135 mm (5.3 inches)78%very high
May Weather15°C (59°F)119 mm (4.7 inches)69%very high
June Weather20°C (69°F)95 mm (3.7 inches)69%very high
July Weather24°C (76°F)132 mm (5.2 inches)62%very high
August Weather23°C (74°F)102 mm (4.0 inches)65%very high
September Weather20°C (68°F)105 mm (4.1 inches)68%very high
October Weather15°C (59°F)152 mm (6.0 inches)74%high
November Weather7°C (46°F)100 mm (4.0 inches)82%moderate
December Weather3°C (37°F)135 mm (5.3 inches)80%low

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