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May Weather in Winchester, United States

Last updated: June 24, 2025

In May, the average temperature in Winchester, United States hovers around 17°C (63°F). However, be prepared for a range of extremes, with minimums dipping as low as -1°C (30°F) and maximums soaring to 33°C (91°F). The month also sees 137 mm (5.4 in) of precipitation spread over 14 days, contributing to a high average humidity of 81%.

May Temperature in Winchester

In May in Winchester, the average temperature is 17°C (63°F). The maximum can reach 33°C (91°F), while the minimum can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates May temperature patterns in Winchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winchester, May typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec293241516372757368574135
Data source: Temperature data for Winchester 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 Winchester

In Winchester in May, the precipitation amount is 137 mm (5.4 in) spread over 14 days.

May Precipitation Trends in Winchester

The chart displays monthly precipitation patterns in Winchester, 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 Winchester, May typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec74941079813712110510184988472
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Winchester

In Winchester 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 Winchester

This chart illustrates the average monthly humidity levels in Winchester, 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 Winchester is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%87%81%82%81%79%78%81%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Winchester

In Winchester 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 Winchester.

Maximum UV Index Levels in Winchester for May

The chart shows the monthly maximum UV Index (UVI) for Winchester 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 Winchester typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Winchester 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 Winchester Compares to Other Months

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

This table compares monthly weather conditions in Winchester, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (30°F)74 mm (2.9 inches)85%moderate
February Weather0°C (32°F)94 mm (3.7 inches)85%moderate
March Weather5°C (42°F)107 mm (4.2 inches)86%high
April Weather11°C (51°F)98 mm (3.9 inches)87%very high
May Weather17°C (63°F)137 mm (5.4 inches)81%very high
June Weather22°C (72°F)121 mm (4.8 inches)82%extreme
July Weather24°C (76°F)105 mm (4.1 inches)81%very high
August Weather23°C (73°F)101 mm (4.0 inches)79%very high
September Weather20°C (69°F)84 mm (3.3 inches)78%very high
October Weather14°C (57°F)98 mm (3.9 inches)81%high
November Weather5°C (41°F)84 mm (3.3 inches)89%moderate
December Weather2°C (35°F)72 mm (2.8 inches)86%low

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