May Weather in Winthrop, United States

Last updated: June 24, 2025

In May, the average temperature in Winthrop, United States hovers around 16°C (61°F), with a minimum of -1°C (30°F) and a maximum reaching up to 33°C (92°F). During this month, expect around 173 mm (6.8 in) of precipitation spread over 15 days, resulting in an average humidity level of 75%.

May Temperature in Winthrop

In May in Winthrop, the average temperature is 16°C (61°F). Maximum temperatures can reach 33°C (92°F), while the minimum can drop as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures, so packing layered clothing is advisable.

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

The chart illustrates May temperature patterns in Winthrop, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winthrop, May typically has an average temperature of 16°C (61°F), with highs reaching up to 33°C (92°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Winthrop

In Winthrop in May, the precipitation amount is 173 mm (6.8 in) during a span of 15 days.

May Precipitation Trends in Winthrop

The chart displays monthly precipitation patterns in Winthrop, 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 Winthrop, May typically receives around 173 mm (6.8 inches) of precipitation spread over approximately 15 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 Winthrop

In Winthrop in May humidity is 75%. With an average temperature of 16°C (61°F), this humidity feels like a warm, muggy embrace, making traveling somewhat uncomfortable as you may find yourself constantly adjusting your clothing and seeking shade to escape the sticky air.

May Average Humidity in Winthrop

This chart illustrates the average monthly humidity levels in Winthrop, 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 Winthrop is approximately 75%, 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 Winthrop

In Winthrop in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Winthrop.

Maximum UV Index Levels in Winthrop for May

The chart shows the monthly maximum UV Index (UVI) for Winthrop 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 Winthrop typically reaches 9, which falls under the very high exposure category.

Data source: Winthrop 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 Winthrop Compares to Other Months

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

This table compares monthly weather conditions in Winthrop, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	44 mm (1.7 inches)	84%	moderate
February Weather	-6°C (21°F)	54 mm (2.1 inches)	85%	moderate
March Weather	2°C (37°F)	68 mm (2.7 inches)	84%	moderate
April Weather	8°C (47°F)	78 mm (3.1 inches)	83%	very high
May Weather	16°C (61°F)	173 mm (6.8 inches)	75%	very high
June Weather	22°C (72°F)	139 mm (5.5 inches)	79%	extreme
July Weather	24°C (75°F)	111 mm (4.4 inches)	75%	very high
August Weather	22°C (71°F)	94 mm (3.7 inches)	69%	very high
September Weather	19°C (66°F)	130 mm (5.1 inches)	74%	very high
October Weather	11°C (51°F)	144 mm (5.7 inches)	79%	moderate
November Weather	2°C (36°F)	47 mm (1.8 inches)	88%	moderate
December Weather	-2°C (29°F)	39 mm (1.6 inches)	82%	moderate