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May Weather in Hopkinton, United States

Last updated: June 24, 2025

In May, the average temperature in Hopkinton, United States hovers around 14°C (57°F). You'll experience a range of temperatures, with lows dropping to 0°C (33°F) and highs soaring up to 33°C (92°F). Be prepared for some rain, as the area sees about 78 mm (3.1 in) of precipitation over 11 days, contributing to an average humidity of 72%.

May Temperature in Hopkinton

In May in Hopkinton, the average temperature is 14°C (57°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 0°C (33°F). Make sure to pack versatile clothing to accommodate both warm days and cool evenings when traveling during this time.

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

The chart illustrates May temperature patterns in Hopkinton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hopkinton, May typically has an average temperature of 14°C (57°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec242734455767727163523828
Data source: Temperature data for Hopkinton 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 Hopkinton

In Hopkinton in May, the precipitation amount is 78 mm (3.1 in) over the course of 11 days.

May Precipitation Trends in Hopkinton

The chart displays monthly precipitation patterns in Hopkinton, 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 Hopkinton, May typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec70837712778851369376130105115
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Hopkinton

In Hopkinton in May humidity is 72%. With an average temperature of 14°C (57°F), this humidity feels like a damp embrace, making outdoor activities slightly uncomfortable and requiring careful planning to stay hydrated and enjoy your travels.

May Average Humidity in Hopkinton

This chart illustrates the average monthly humidity levels in Hopkinton, 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 Hopkinton is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hopkinton

In Hopkinton in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hopkinton.

Maximum UV Index Levels in Hopkinton for May

The chart shows the monthly maximum UV Index (UVI) for Hopkinton 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 Hopkinton typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3458910997532
Data source: Hopkinton 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 Hopkinton Compares to Other Months

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

This table compares monthly weather conditions in Hopkinton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)70 mm (2.8 inches)86%moderate
February Weather-3°C (27°F)83 mm (3.3 inches)84%moderate
March Weather1°C (34°F)77 mm (3.0 inches)82%moderate
April Weather7°C (45°F)127 mm (5.0 inches)80%very high
May Weather14°C (57°F)78 mm (3.1 inches)72%very high
June Weather20°C (68°F)85 mm (3.4 inches)72%very high
July Weather22°C (73°F)136 mm (5.3 inches)67%very high
August Weather21°C (71°F)93 mm (3.7 inches)66%very high
September Weather17°C (64°F)76 mm (3.0 inches)71%high
October Weather11°C (52°F)130 mm (5.1 inches)78%moderate
November Weather3°C (38°F)105 mm (4.1 inches)84%moderate
December Weather-2°C (29°F)115 mm (4.5 inches)81%low

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