nomadseason

May Weather in Frederick, United States

Last updated: June 24, 2025

In Frederick, United States, the average temperature in May hovers around 18°C (65°F). Expect a range that dips to a chilly 1°C (34°F) and peaks at a warm 33°C (91°F). During this month, precipitation reaches about 134 mm (5.3 in), with rain likely falling on 14 days. Additionally, the average humidity lingers at 78%, creating a pleasantly moderate atmosphere.

May Temperature in Frederick

In May in Frederick, the average temperature is 18°C (65°F). Maximums can reach 33°C (91°F), while minimums can drop as low as 1°C (34°F). Be prepared for a diverse range of temperatures when you travel, ensuring you're equipped for both warm days and cooler nights.

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

The chart illustrates May temperature patterns in Frederick, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Frederick, May typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (91°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec353944556473797670604538
Data source: Temperature data for Frederick generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Frederick

In Frederick in May, the total precipitation amount is 134 mm (5.3 in) over the course of 14 days.

May Precipitation Trends in Frederick

The chart displays monthly precipitation patterns in Frederick, 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 Frederick, May typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec619590100134111138114107998894
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Frederick

In Frederick 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 Frederick

This chart illustrates the average monthly humidity levels in Frederick, 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 Frederick 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 Frederick

In Frederick 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 Frederick.

Maximum UV Index Levels in Frederick for May

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

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

This table compares monthly weather conditions in Frederick, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)61 mm (2.4 inches)86%moderate
February Weather4°C (39°F)95 mm (3.7 inches)86%moderate
March Weather7°C (44°F)90 mm (3.6 inches)86%high
April Weather13°C (55°F)100 mm (3.9 inches)84%very high
May Weather18°C (65°F)134 mm (5.3 inches)78%very high
June Weather23°C (73°F)111 mm (4.4 inches)79%very high
July Weather26°C (79°F)138 mm (5.4 inches)70%very high
August Weather24°C (76°F)114 mm (4.5 inches)59%very high
September Weather21°C (70°F)107 mm (4.2 inches)68%very high
October Weather16°C (60°F)99 mm (3.9 inches)80%high
November Weather7°C (45°F)88 mm (3.5 inches)86%moderate
December Weather4°C (39°F)94 mm (3.7 inches)85%moderate

Compare Frederick's Climate with Cities Worldwide