May Weather in Grand Mound, United States

Last updated: June 24, 2025

In May, the average temperature in Grand Mound, United States is a pleasant 13°C (56°F). Expect a minimum of 2°C (36°F) and a comfortable maximum of 30°C (86°F). This month sees about 71 mm (2.8 in) of precipitation spread over 10 days, while the average humidity hovers around a noteworthy 84%.

May Temperature in Grand Mound

In May in Grand Mound, the average temperature is 13°C (56°F). The maximum can reach 30°C (86°F) and the minimum can be as low as 2°C (36°F). This variation in temperature makes it essential for travelers to pack layers to accommodate both warm and cooler conditions.

May Weather in Grand Mound: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Grand Mound, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand Mound, May typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (86°F) and lows dropping to around 2°C (36°F).

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

May Precipitation in Grand Mound

In Grand Mound in May, the precipitation amount is 71 mm (2.8 in) over a duration of 10 days.

May Precipitation Trends in Grand Mound

The chart displays monthly precipitation patterns in Grand Mound, 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 Grand Mound, May typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 10 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 Grand Mound

In Grand Mound in May, humidity is 84%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it feel cooler and more uncomfortable for traveling, as the air clings to your skin and weighs you down with a sense of heaviness.

May Average Humidity in Grand Mound

This chart illustrates the average monthly humidity levels in Grand Mound, 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 Grand Mound is approximately 84%, 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 Grand Mound

In Grand Mound 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 Grand Mound.

Maximum UV Index Levels in Grand Mound for May

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

Data source: Grand Mound 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 Grand Mound Compares to Other Months

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

This table compares monthly weather conditions in Grand Mound, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	186 mm (7.3 inches)	86%	low
February Weather	4°C (40°F)	169 mm (6.7 inches)	84%	moderate
March Weather	7°C (45°F)	137 mm (5.4 inches)	85%	moderate
April Weather	10°C (49°F)	119 mm (4.7 inches)	83%	high
May Weather	13°C (56°F)	71 mm (2.8 inches)	84%	very high
June Weather	16°C (60°F)	54 mm (2.1 inches)	84%	very high
July Weather	18°C (65°F)	12 mm (0.5 inches)	82%	very high
August Weather	19°C (66°F)	15 mm (0.6 inches)	73%	very high
September Weather	16°C (61°F)	88 mm (3.5 inches)	74%	high
October Weather	10°C (51°F)	132 mm (5.2 inches)	83%	moderate
November Weather	7°C (45°F)	181 mm (7.1 inches)	86%	moderate
December Weather	5°C (40°F)	198 mm (7.8 inches)	87%	low