May Weather in Catonsville, United States

Last updated: June 24, 2025

In May, the average temperature in Catonsville, United States hovers around 18°C (65°F), offering a comfortable climate. However, temperatures can vary significantly, with minimums dropping to 2°C (36°F) and maximums soaring to 33°C (92°F). Be prepared for 142 mm (5.6 in) of rainfall spread over approximately 14 days, and expect a humidity level of 78%, which adds a touch of warmth to the air. Enjoy the rich and varied weather this month brings!

May Temperature in Catonsville

In May, in Catonsville, the average temperature is 18°C (65°F). The maximum can reach 33°C (92°F), while the minimum can be as low as 2°C (36°F). This temperature range makes Catonsville an ideal destination for travelers seeking both warm days and cool nights.

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

The chart illustrates May temperature patterns in Catonsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Catonsville, 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 2°C (36°F).

Data source: Temperature data for Catonsville generated using information from the Copernicus Climate Change Service.

May Precipitation in Catonsville

In Catonsville in May, the precipitation amount is 142 mm (5.6 in) occurring over a span of 14 days.

May Precipitation Trends in Catonsville

The chart displays monthly precipitation patterns in Catonsville, 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 Catonsville, May typically receives around 142 mm (5.6 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Catonsville

In Catonsville 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 Catonsville

This chart illustrates the average monthly humidity levels in Catonsville, 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 Catonsville is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Catonsville

In Catonsville 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 Catonsville.

Maximum UV Index Levels in Catonsville for May

The chart shows the monthly maximum UV Index (UVI) for Catonsville 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 Catonsville typically reaches 10, which falls under the very high exposure category.

Data source: Catonsville 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 Catonsville Compares to Other Months

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

This table compares monthly weather conditions in Catonsville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	62 mm (2.4 inches)	84%	moderate
February Weather	4°C (40°F)	101 mm (4.0 inches)	83%	moderate
March Weather	7°C (46°F)	90 mm (3.5 inches)	83%	high
April Weather	13°C (56°F)	103 mm (4.1 inches)	81%	very high
May Weather	18°C (65°F)	142 mm (5.6 inches)	78%	very high
June Weather	23°C (75°F)	122 mm (4.8 inches)	79%	very high
July Weather	26°C (80°F)	168 mm (6.6 inches)	74%	very high
August Weather	25°C (77°F)	150 mm (5.9 inches)	72%	very high
September Weather	22°C (71°F)	106 mm (4.2 inches)	75%	very high
October Weather	16°C (62°F)	111 mm (4.4 inches)	81%	high
November Weather	8°C (47°F)	83 mm (3.3 inches)	85%	moderate
December Weather	4°C (40°F)	99 mm (3.9 inches)	84%	moderate