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May Weather in Cornell, United States

Last updated: June 24, 2025

In May, the average temperature in Cornell, United States is a mild 14°C (58°F). Visitors can expect a temperature range from a chilly -2°C (29°F) to a warm 34°C (94°F). With an average humidity of 79%, the weather can feel quite humid. Be prepared for some rain, as 122 mm (4.8 in) of precipitation is likely over 12 days this month.

May Temperature in Cornell

In May in Cornell, the average temperature is 14°C (58°F). Maximum temperatures can reach 34°C (94°F), while minimums can dip as low as -2°C (29°F). Travelers should be prepared for a wide range of weather conditions, from warm days to chilly nights.

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

The chart illustrates May temperature patterns in Cornell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cornell, May typically has an average temperature of 14°C (58°F), with highs reaching up to 34°C (94°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec161632425768726862473222
Data source: Temperature data for Cornell 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 Cornell

In Cornell in May, the precipitation amount is 122 mm (4.8 in) over a span of 12 days.

May Precipitation Trends in Cornell

The chart displays monthly precipitation patterns in Cornell, 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 Cornell, May typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec32475689122120121123981154860
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Cornell

In Cornell in May, humidity is 79%. With an average temperature of 14°C (58°F), this humidity feels like an oppressive blanket wrapped around you, making even the mild temperatures feel heavier and more stifling for traveling.

May Average Humidity in Cornell

This chart illustrates the average monthly humidity levels in Cornell, 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 Cornell is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Cornell

In Cornell 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 Cornell.

Maximum UV Index Levels in Cornell for May

The chart shows the monthly maximum UV Index (UVI) for Cornell 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 Cornell typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Cornell 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 Cornell Compares to Other Months

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

This table compares monthly weather conditions in Cornell, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)32 mm (1.2 inches)88%low
February Weather-9°C (17°F)47 mm (1.9 inches)89%moderate
March Weather0°C (32°F)56 mm (2.2 inches)86%moderate
April Weather6°C (42°F)89 mm (3.5 inches)85%high
May Weather14°C (58°F)122 mm (4.8 inches)79%very high
June Weather20°C (69°F)120 mm (4.7 inches)80%very high
July Weather22°C (72°F)121 mm (4.8 inches)80%very high
August Weather20°C (68°F)123 mm (4.9 inches)78%very high
September Weather17°C (62°F)98 mm (3.9 inches)80%high
October Weather8°C (47°F)114 mm (4.5 inches)84%moderate
November Weather0°C (32°F)48 mm (1.9 inches)89%moderate
December Weather-5°C (23°F)60 mm (2.4 inches)85%low

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