May Weather in Monmouth, United States

Last updated: June 24, 2025

In Monmouth, United States, the average temperature in May hovers around 13°C (56°F), with a minimum of 2°C (35°F) and a maximum reaching up to 30°C (87°F). Expect some rain, as the region sees about 57 mm (2.3 in) of precipitation spread over 9 days. The air tends to feel quite humid, with an average humidity of 83%.

May Temperature in Monmouth

In May in Monmouth, the average temperature is 13°C (56°F). Maximum temperatures can reach 30°C (87°F), while minimums can drop as low as 2°C (35°F). It's a great time to plan a trip, as you can experience comfortable weather along with the possibility of warmer days and cooler nights.

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

The chart illustrates May temperature patterns in Monmouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monmouth, May typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (87°F) and lows dropping to around 2°C (35°F).

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

May Precipitation in Monmouth

In Monmouth in May, the precipitation amount is 57 mm (2.3 in) over the course of 9 days.

May Precipitation Trends in Monmouth

The chart displays monthly precipitation patterns in Monmouth, 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 Monmouth, May typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 9 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 Monmouth

In Monmouth in May humidity is 83%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable as the air feels heavy and the moisture clings to your skin.

May Average Humidity in Monmouth

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

In Monmouth 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 Monmouth.

Maximum UV Index Levels in Monmouth for May

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

Data source: Monmouth 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 Monmouth Compares to Other Months

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

This table compares monthly weather conditions in Monmouth, 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 (42°F)	162 mm (6.4 inches)	85%	low
February Weather	5°C (41°F)	174 mm (6.9 inches)	84%	moderate
March Weather	7°C (45°F)	131 mm (5.2 inches)	85%	high
April Weather	10°C (50°F)	113 mm (4.5 inches)	83%	high
May Weather	13°C (56°F)	57 mm (2.3 inches)	83%	very high
June Weather	17°C (63°F)	44 mm (1.7 inches)	83%	very high
July Weather	20°C (68°F)	4 mm (0.1 inches)	82%	very high
August Weather	20°C (69°F)	6 mm (0.2 inches)	74%	very high
September Weather	17°C (63°F)	61 mm (2.4 inches)	71%	high
October Weather	11°C (53°F)	88 mm (3.5 inches)	81%	moderate
November Weather	8°C (46°F)	145 mm (5.7 inches)	87%	moderate
December Weather	5°C (41°F)	187 mm (7.4 inches)	87%	low