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May Weather in Martinsburg, United States

Last updated: June 24, 2025

In Martinsburg, United States, the average temperature for May hovers around 18°C (65°F), with a minimum dip to 0°C (33°F) and an occasional rise to a comfortable 33°C (92°F). Expect about 135 mm (5.3 in) of precipitation spread over 14 days, resulting in an average humidity level of 78%—perfect for those who enjoy a lush, green environment!

May Temperature in Martinsburg

In May in Martinsburg, the average temperature is 18°C (65°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 0°C (33°F). Pack accordingly to enjoy a range of activities in comfortable temperatures.

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

The chart illustrates May temperature patterns in Martinsburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Martinsburg, May typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec343844546473797670604538
Data source: Temperature data for Martinsburg 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 Martinsburg

In Martinsburg in May, the precipitation amount is 135 mm (5.3 in) over a period of 14 days.

May Precipitation Trends in Martinsburg

The chart displays monthly precipitation patterns in Martinsburg, 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 Martinsburg, May typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec639286106135103116981101077894
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Martinsburg

In Martinsburg in May, humidity is 78%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel quite muggy and potentially uncomfortable, as it can leave you feeling sticky and fatigued more quickly than usual.

May Average Humidity in Martinsburg

This chart illustrates the average monthly humidity levels in Martinsburg, 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 Martinsburg is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Martinsburg

In Martinsburg 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 Martinsburg.

Maximum UV Index Levels in Martinsburg for May

The chart shows the monthly maximum UV Index (UVI) for Martinsburg 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 Martinsburg typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098743
Data source: Martinsburg 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 Martinsburg Compares to Other Months

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

This table compares monthly weather conditions in Martinsburg, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)63 mm (2.5 inches)86%moderate
February Weather3°C (38°F)92 mm (3.6 inches)86%moderate
March Weather7°C (44°F)86 mm (3.4 inches)86%high
April Weather12°C (55°F)106 mm (4.2 inches)84%very high
May Weather18°C (65°F)135 mm (5.3 inches)78%very high
June Weather23°C (73°F)103 mm (4.0 inches)79%very high
July Weather26°C (79°F)116 mm (4.5 inches)70%very high
August Weather25°C (76°F)98 mm (3.8 inches)59%very high
September Weather21°C (70°F)109 mm (4.3 inches)68%very high
October Weather15°C (60°F)107 mm (4.2 inches)80%high
November Weather7°C (45°F)78 mm (3.1 inches)86%moderate
December Weather3°C (38°F)94 mm (3.7 inches)85%moderate

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