May Weather in Monmouth, United States

Last updated: June 24, 2025

In May, the average temperature in Monmouth, United States hovers around 17°C (64°F), with lows reaching a chilly 0°C (32°F) and highs soaring up to a warm 35°C (96°F). Expect 166 mm (6.6 in) of precipitation over approximately 15 days, contributing to an average humidity of 78%. Be prepared for a varied climate that beautifully balances warmth and moisture!

May Temperature in Monmouth

In May in Monmouth, the average temperature is 17°C (64°F). Maximum temperatures can reach 35°C (96°F), while minimum temperatures can drop as low as 0°C (32°F). Be prepared for a diverse range of weather conditions during your travels!

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 17°C (64°F), with highs reaching up to 35°C (96°F) and lows dropping to around 0°C (32°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 total precipitation amount is 166 mm (6.6 in) over the course of 15 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 166 mm (6.6 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 Monmouth

In Monmouth in May humidity is 78%. With average temperature 17°C (64°F), this humidity feels like a warm embrace, making travel feel sticky and heavy, as the air wraps around you and the moments spent outdoors leave you longing for a cool respite.

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 78%, 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	-4°C (26°F)	56 mm (2.2 inches)	81%	moderate
February Weather	-2°C (28°F)	63 mm (2.5 inches)	81%	moderate
March Weather	5°C (41°F)	102 mm (4.0 inches)	81%	high
April Weather	10°C (51°F)	99 mm (3.9 inches)	82%	very high
May Weather	17°C (64°F)	166 mm (6.6 inches)	78%	very high
June Weather	23°C (75°F)	138 mm (5.4 inches)	81%	extreme
July Weather	25°C (78°F)	93 mm (3.7 inches)	79%	very high
August Weather	23°C (75°F)	64 mm (2.5 inches)	77%	very high
September Weather	21°C (69°F)	99 mm (3.9 inches)	78%	very high
October Weather	13°C (55°F)	126 mm (5.0 inches)	78%	high
November Weather	4°C (40°F)	51 mm (2.0 inches)	87%	moderate
December Weather	1°C (33°F)	49 mm (1.9 inches)	84%	low