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May Weather in Unionville, United States

Last updated: June 24, 2025

In May, the average temperature in Unionville, United States hovers around 18°C (64°F), with a minimum dipping to 2°C (36°F) and occasionally soaring to a maximum of 37°C (99°F). Expect 155 mm (6.1 in) of precipitation spread over about 15 days, contributing to an average humidity level of 77%.

May Temperature in Unionville

In May in Unionville, the average temperature is 18°C (64°F). Maximum temperatures can reach 37°C (99°F), while minimums can drop as low as 2°C (36°F). Be prepared for a wide range of temperatures when traveling to Unionville in May.

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

The chart illustrates May temperature patterns in Unionville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unionville, May typically has an average temperature of 18°C (64°F), with highs reaching up to 37°C (99°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec252842516475787569544034
Data source: Temperature data for Unionville 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 Unionville

In Unionville in May, the precipitation amount is 155 mm (6.1 in) over a period of 15 days.

May Precipitation Trends in Unionville

The chart displays monthly precipitation patterns in Unionville, 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 Unionville, May typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec52501018215512096831201295235
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Unionville

In Unionville in May humidity is 77%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it feel muggy and potentially uncomfortable for traveling, as sweat clings to your skin and the air thickens around you.

May Average Humidity in Unionville

This chart illustrates the average monthly humidity levels in Unionville, 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 Unionville is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Unionville

In Unionville 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 Unionville.

Maximum UV Index Levels in Unionville for May

The chart shows the monthly maximum UV Index (UVI) for Unionville 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 Unionville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111108643
Data source: Unionville 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 Unionville Compares to Other Months

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

This table compares monthly weather conditions in Unionville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)51 mm (2.0 inches)78%moderate
February Weather-2°C (28°F)50 mm (2.0 inches)80%moderate
March Weather6°C (42°F)101 mm (4.0 inches)77%high
April Weather10°C (51°F)82 mm (3.2 inches)77%very high
May Weather18°C (64°F)155 mm (6.1 inches)77%very high
June Weather24°C (76°F)120 mm (4.7 inches)81%extreme
July Weather26°C (79°F)96 mm (3.8 inches)81%extreme
August Weather24°C (75°F)83 mm (3.3 inches)77%very high
September Weather21°C (70°F)120 mm (4.7 inches)73%very high
October Weather12°C (54°F)129 mm (5.1 inches)75%high
November Weather5°C (40°F)52 mm (2.0 inches)85%moderate
December Weather1°C (34°F)35 mm (1.4 inches)83%moderate

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