May Weather in Hertford, United States

Last updated: June 24, 2025

The average temperature in Hertford, United States during May hovers around 21°C (70°F). Expect temperatures to range from a chilly 5°C (42°F) to a sweltering 35°C (96°F). With an average humidity of 80%, you might feel quite the moisture in the air! Throughout the month, anticipate 129 mm (5.1 in) of precipitation spread over approximately 11 days.

May Temperature in Hertford

In May in Hertford, the average temperature is 21°C (70°F), with maximums reaching up to 35°C (96°F) and minimums dropping as low as 5°C (42°F). This makes it an ideal time for travelers seeking mild weather with the possibility of warmer days.

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

The chart illustrates May temperature patterns in Hertford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hertford, May typically has an average temperature of 21°C (70°F), with highs reaching up to 35°C (96°F) and lows dropping to around 5°C (42°F).

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

May Precipitation in Hertford

In Hertford in May, the precipitation amount is 129 mm (5.1 in) spread over 11 days, indicating a wet period for the area.

May Precipitation Trends in Hertford

The chart displays monthly precipitation patterns in Hertford, 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 Hertford, May typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 11 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 Hertford

In Hertford in May humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.

May Average Humidity in Hertford

This chart illustrates the average monthly humidity levels in Hertford, 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 Hertford is approximately 80%, 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 Hertford

In Hertford in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Hertford.

Maximum UV Index Levels in Hertford for May

The chart shows the monthly maximum UV Index (UVI) for Hertford 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 Hertford typically reaches 11, which falls under the extreme exposure category.

Data source: Hertford 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 Hertford Compares to Other Months

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

This table compares monthly weather conditions in Hertford, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	93 mm (3.7 inches)	84%	moderate
February Weather	9°C (49°F)	92 mm (3.6 inches)	83%	high
March Weather	11°C (52°F)	71 mm (2.8 inches)	82%	very high
April Weather	16°C (62°F)	94 mm (3.7 inches)	81%	very high
May Weather	21°C (70°F)	129 mm (5.1 inches)	80%	extreme
June Weather	25°C (77°F)	137 mm (5.4 inches)	82%	very high
July Weather	27°C (80°F)	142 mm (5.6 inches)	81%	extreme
August Weather	26°C (79°F)	188 mm (7.4 inches)	81%	very high
September Weather	24°C (75°F)	130 mm (5.1 inches)	78%	very high
October Weather	19°C (66°F)	82 mm (3.2 inches)	80%	very high
November Weather	12°C (53°F)	83 mm (3.3 inches)	84%	moderate
December Weather	9°C (48°F)	98 mm (3.9 inches)	84%	moderate