May Weather in Grundy, United States

Last updated: June 24, 2025

In May, the average temperature in Grundy, United States hovers around 18°C (64°F), with a range that can dip to a chilly 0°C (33°F) or rise to a warm 30°C (87°F). Expect 138 mm (5.4 in) of precipitation spread over about 15 days, contributing to an average humidity level of 83%. Pack accordingly! 🌧️🌞

May Temperature in Grundy

In May in Grundy, the average temperature is 18°C (64°F). The maximum can reach 30°C (87°F) and the minimum can be as low as 0°C (33°F). This climate makes Grundy a versatile travel destination, suitable for both warm-weather activities and cooler excursions.

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

The chart illustrates May temperature patterns in Grundy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grundy, May typically has an average temperature of 18°C (64°F), with highs reaching up to 30°C (87°F) and lows dropping to around 0°C (33°F).

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

May Precipitation in Grundy

In Grundy in May, the total precipitation amount is 138 mm (5.4 in) recorded over the course of 15 days.

May Precipitation Trends in Grundy

The chart displays monthly precipitation patterns in Grundy, 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 Grundy, May typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 15 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 Grundy

In Grundy in May humidity is 83%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket enveloping you, making outdoor exploring somewhat sticky and requiring frequent hydration breaks.

May Average Humidity in Grundy

This chart illustrates the average monthly humidity levels in Grundy, 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 Grundy 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 Grundy

In Grundy 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 Grundy.

Maximum UV Index Levels in Grundy for May

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

Data source: Grundy 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 Grundy Compares to Other Months

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

This table compares monthly weather conditions in Grundy, 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 (37°F)	98 mm (3.8 inches)	87%	moderate
February Weather	5°C (42°F)	168 mm (6.6 inches)	87%	high
March Weather	8°C (47°F)	126 mm (5.0 inches)	86%	very high
April Weather	13°C (55°F)	143 mm (5.6 inches)	84%	very high
May Weather	18°C (64°F)	138 mm (5.4 inches)	83%	extreme
June Weather	21°C (70°F)	152 mm (6.0 inches)	83%	extreme
July Weather	23°C (74°F)	107 mm (4.2 inches)	79%	extreme
August Weather	22°C (72°F)	124 mm (4.9 inches)	66%	very high
September Weather	20°C (68°F)	105 mm (4.1 inches)	68%	very high
October Weather	15°C (59°F)	130 mm (5.1 inches)	78%	high
November Weather	7°C (45°F)	82 mm (3.2 inches)	89%	moderate
December Weather	5°C (41°F)	129 mm (5.1 inches)	86%	moderate