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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 24°C (75°F). However, be prepared for extremes, with temperatures ranging from a chilly 6°C (43°F) to a scorching 41°C (105°F). Expect 79 mm (3.1 in) of precipitation spread across 9 days, accompanied by a relatively high average humidity of 80%. Stay hydrated and enjoy the diverse weather!

May Temperature in Stamford

In May in Stamford, the average temperature is 24°C (75°F), with maximums reaching 41°C (105°F) and minimums dropping as low as 6°C (43°F). Be sure to pack for a wide range of temperatures, as the weather can vary significantly during your travels!

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 24°C (75°F), with highs reaching up to 41°C (105°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec454759657583868578665549
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 precipitation amount is 79 mm (3.1 in) spread over 9 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 79 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec282649667960324487673225
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 80%. With an average temperature of 24°C (75°F), this humidity feels like a warm, sticky blanket enveloping you, making travel slightly uncomfortable as sweat clings to your skin and the air feels thick, urging you to seek shade and hydration frequently.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%74%75%80%80%75%67%64%70%82%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 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101112121110864
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 Weather7°C (45°F)28 mm (1.1 inches)77%moderate
February Weather8°C (47°F)26 mm (1.0 inches)76%high
March Weather15°C (60°F)49 mm (1.9 inches)74%very high
April Weather18°C (65°F)66 mm (2.6 inches)75%very high
May Weather24°C (75°F)79 mm (3.1 inches)80%extreme
June Weather28°C (83°F)60 mm (2.4 inches)80%extreme
July Weather30°C (86°F)31 mm (1.2 inches)75%extreme
August Weather29°C (85°F)44 mm (1.7 inches)67%extreme
September Weather26°C (78°F)87 mm (3.4 inches)64%very high
October Weather19°C (66°F)67 mm (2.6 inches)70%very high
November Weather13°C (55°F)32 mm (1.3 inches)82%high
December Weather9°C (49°F)25 mm (1.0 inches)85%moderate

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