May Weather in Derby, United States

Last updated: June 24, 2025

In May, the average temperature in Derby, United States hovers around 19°C (67°F), with temperatures ranging from a comfortable 4°C (39°F) to a warm 35°C (96°F). Expect approximately 166 mm (6.5 in) of rain over 14 days, contributing to an average humidity level of 83%.

May Temperature in Derby

In May in Derby, the average temperature is 19°C (67°F). The maximum can reach 35°C (96°F), while the minimum can be as low as 4°C (39°F). Be sure to pack for a range of temperatures to fully enjoy your trip!

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

The chart illustrates May temperature patterns in Derby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Derby, May typically has an average temperature of 19°C (67°F), with highs reaching up to 35°C (96°F) and lows dropping to around 4°C (39°F).

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

May Precipitation in Derby

In Derby in May, the precipitation amount is 166 mm (6.5 in) over a period of 14 days.

May Precipitation Trends in Derby

The chart displays monthly precipitation patterns in Derby, 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 Derby, May typically receives around 166 mm (6.5 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Derby

In Derby in May humidity is 83%. With an average temperature of 19°C (67°F), this humidity feels like a warm, tropical blanket wrapping around you, making traveling feel a bit sluggish and sticky, yet still inviting as long as you stay hydrated and take breaks in the shade.

May Average Humidity in Derby

This chart illustrates the average monthly humidity levels in Derby, 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 Derby is approximately 83%, 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 Derby

In Derby 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 Derby.

Maximum UV Index Levels in Derby for May

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

Data source: Derby 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 Derby Compares to Other Months

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

This table compares monthly weather conditions in Derby, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (35°F)	40 mm (1.6 inches)	77%	moderate
February Weather	2°C (36°F)	28 mm (1.1 inches)	76%	high
March Weather	10°C (50°F)	82 mm (3.2 inches)	71%	high
April Weather	13°C (56°F)	85 mm (3.4 inches)	73%	very high
May Weather	19°C (67°F)	166 mm (6.5 inches)	83%	very high
June Weather	26°C (78°F)	106 mm (4.2 inches)	83%	extreme
July Weather	27°C (81°F)	67 mm (2.7 inches)	81%	extreme
August Weather	26°C (79°F)	86 mm (3.4 inches)	73%	very high
September Weather	23°C (74°F)	78 mm (3.1 inches)	67%	very high
October Weather	15°C (59°F)	127 mm (5.0 inches)	72%	high
November Weather	8°C (46°F)	27 mm (1.0 inches)	82%	moderate
December Weather	4°C (40°F)	30 mm (1.2 inches)	85%	moderate