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May Weather in Stamford, United States

Last updated: June 24, 2025

In May, the average temperature in Stamford, United States hovers around 13°C (56°F), with a minimum drop to -3°C (26°F) and a maximum rise to 31°C (89°F). This month experiences 115 mm (4.5 in) of precipitation across roughly 15 days, contributing to an average humidity level of 76%. Embrace the variety in weather as you explore this vibrant locale!

May Temperature in Stamford

In May in Stamford, the average temperature is 13°C (56°F). Maximums can reach 31°C (89°F) and minimums can be as low as -3°C (26°F). This makes Stamford an ideal destination for travelers seeking a diverse range of temperatures, so be sure to pack accordingly!

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

The chart illustrates May temperature patterns in Stamford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stamford, May typically has an average temperature of 13°C (56°F), with highs reaching up to 31°C (89°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec242732445665706861513629
Data source: Temperature data for Stamford 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 Stamford

In Stamford in May, the total precipitation amount is 115 mm (4.5 in) over a span of 15 days.

May Precipitation Trends in Stamford

The chart displays monthly precipitation patterns in Stamford, 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 Stamford, May typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec75938811511599118110961379493
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Stamford

In Stamford in May humidity is 76%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making travel a bit uncomfortable as you navigate through the heavy, moisture-laden air.

May Average Humidity in Stamford

This chart illustrates the average monthly humidity levels in Stamford, 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 Stamford is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%76%72%67%64%72%81%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Stamford

In Stamford 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 Stamford.

Maximum UV Index Levels in Stamford for May

The chart shows the monthly maximum UV Index (UVI) for Stamford 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 Stamford typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Stamford 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 Stamford Compares to Other Months

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

This table compares monthly weather conditions in Stamford, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)75 mm (2.9 inches)89%moderate
February Weather-3°C (27°F)93 mm (3.7 inches)88%moderate
March Weather0°C (33°F)88 mm (3.4 inches)86%high
April Weather7°C (44°F)115 mm (4.5 inches)84%very high
May Weather13°C (56°F)115 mm (4.5 inches)76%very high
June Weather18°C (65°F)99 mm (3.9 inches)72%very high
July Weather21°C (70°F)118 mm (4.6 inches)66%very high
August Weather20°C (68°F)110 mm (4.3 inches)64%very high
September Weather16°C (62°F)96 mm (3.8 inches)72%very high
October Weather11°C (51°F)137 mm (5.4 inches)81%high
November Weather2°C (37°F)94 mm (3.7 inches)87%moderate
December Weather-2°C (29°F)93 mm (3.7 inches)84%low

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