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May Weather in Mechanicsburg, United States

Last updated: June 24, 2025

In May, the average temperature in Mechanicsburg, United States is a pleasant 17°C (63°F). Expect a range that can dip to a chilly 0°C (33°F) at night, while daytime can heat up to a warm 33°C (91°F). You might encounter 121 mm (4.8 in) of precipitation over 14 days, with an average humidity level of 75%, creating a comfortably humid atmosphere.

May Temperature in Mechanicsburg

In May in Mechanicsburg, the average temperature is 17°C (63°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 0°C (33°F). Be prepared for a wide range of temperatures during your travels to Mechanicsburg this May.

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

The chart illustrates May temperature patterns in Mechanicsburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mechanicsburg, 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 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec343743536372787569594438
Data source: Temperature data for Mechanicsburg 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 Mechanicsburg

In Mechanicsburg in May, the precipitation amount is 121 mm (4.8 in) over a span of 14 days.

May Precipitation Trends in Mechanicsburg

The chart displays monthly precipitation patterns in Mechanicsburg, 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 Mechanicsburg, May typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec659994102121921321071161058689
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mechanicsburg

In Mechanicsburg in May, humidity is 75%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities a bit sticky and requiring frequent breaks to stay refreshed during your travels.

May Average Humidity in Mechanicsburg

This chart illustrates the average monthly humidity levels in Mechanicsburg, 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 Mechanicsburg is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mechanicsburg

In Mechanicsburg 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 Mechanicsburg.

Maximum UV Index Levels in Mechanicsburg for May

The chart shows the monthly maximum UV Index (UVI) for Mechanicsburg 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 Mechanicsburg typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Mechanicsburg 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 Mechanicsburg Compares to Other Months

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

This table compares monthly weather conditions in Mechanicsburg, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)64 mm (2.5 inches)87%moderate
February Weather3°C (37°F)99 mm (3.9 inches)85%moderate
March Weather6°C (43°F)94 mm (3.7 inches)85%high
April Weather12°C (53°F)102 mm (4.0 inches)83%very high
May Weather17°C (63°F)121 mm (4.8 inches)75%very high
June Weather22°C (72°F)92 mm (3.6 inches)73%very high
July Weather25°C (78°F)132 mm (5.2 inches)65%very high
August Weather24°C (76°F)107 mm (4.2 inches)62%very high
September Weather21°C (69°F)116 mm (4.6 inches)66%very high
October Weather15°C (59°F)105 mm (4.1 inches)79%high
November Weather7°C (45°F)86 mm (3.4 inches)87%moderate
December Weather3°C (38°F)88 mm (3.5 inches)85%low

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