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May Weather in Quincy, United States

Last updated: June 24, 2025

In May, the average temperature in Quincy, United States is a comfortable 17°C (63°F). However, be prepared for a range that can dip to a chilly -1°C (30°F) or soar to a sizzling 32°C (91°F). Expect some rain, with 122 mm (4.8 in) of precipitation spread over 15 days, contributing to an average humidity of 81%. Whether you're enjoying a warm day or facing occasional showers, this month offers a unique blend of weather and atmosphere!

May Temperature in Quincy

In May in Quincy, the average temperature is 17°C (63°F). The maximum can reach 32°C (91°F), while the minimum can be as low as -1°C (30°F). This variability makes it essential to pack layers and be prepared for both warm and cool weather during your travels.

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

The chart illustrates May temperature patterns in Quincy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Quincy, May typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec303241516371757368574135
Data source: Temperature data for Quincy 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 Quincy

In Quincy in May, the precipitation amount is 122 mm (4.8 in) over a span of 15 days.

May Precipitation Trends in Quincy

The chart displays monthly precipitation patterns in Quincy, 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 Quincy, May typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec739910210512211910492771009382
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Quincy

In Quincy in May humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

May Average Humidity in Quincy

This chart illustrates the average monthly humidity levels in Quincy, 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 Quincy is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Quincy

In Quincy 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 Quincy.

Maximum UV Index Levels in Quincy for May

The chart shows the monthly maximum UV Index (UVI) for Quincy 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 Quincy typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Quincy 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 Quincy Compares to Other Months

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

This table compares monthly weather conditions in Quincy, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)73 mm (2.9 inches)88%moderate
February Weather0°C (33°F)99 mm (3.9 inches)87%moderate
March Weather5°C (42°F)102 mm (4.0 inches)87%high
April Weather10°C (51°F)104 mm (4.1 inches)87%very high
May Weather17°C (63°F)122 mm (4.8 inches)81%very high
June Weather22°C (72°F)119 mm (4.7 inches)82%very high
July Weather24°C (76°F)104 mm (4.1 inches)81%very high
August Weather23°C (73°F)92 mm (3.6 inches)78%very high
September Weather20°C (69°F)77 mm (3.0 inches)78%very high
October Weather14°C (57°F)100 mm (3.9 inches)82%high
November Weather5°C (41°F)93 mm (3.7 inches)89%moderate
December Weather2°C (35°F)82 mm (3.2 inches)86%moderate

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