May Weather in Monticello, United States

Last updated: June 24, 2025

In May, the average temperature in Monticello, United States hovers around 15°C (59°F), creating a comfortable climate for exploration. However, be prepared for some extremes, with temperatures dipping as low as -3°C (28°F) and soaring to a sizzling 31°C (88°F). Expect about 28 mm (1.1 in) of precipitation spread over 5 days, and enjoy an average humidity level of 53% that adds just the right touch of moisture to the air.

May Temperature in Monticello

In May in Monticello, the average temperature is 15°C (59°F). Maximums can reach 31°C (88°F), while minimums can drop as low as -3°C (28°F). Be prepared for a wide range of temperatures when traveling to Monticello during this time.

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

The chart illustrates May temperature patterns in Monticello, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monticello, May typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around -3°C (28°F).

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

May Precipitation in Monticello

In Monticello in May, the precipitation amount is 28 mm (1.1 in) over a period of 5 days.

May Precipitation Trends in Monticello

The chart displays monthly precipitation patterns in Monticello, 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 Monticello, May typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 5 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 Monticello

In Monticello in May, humidity is 53%. With an average temperature of 15°C (59°F), this humidity feels like a pleasant and refreshing embrace, making it ideal for leisurely strolls and outdoor adventures.

May Average Humidity in Monticello

This chart illustrates the average monthly humidity levels in Monticello, 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 Monticello is approximately 53%, 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 Monticello

In Monticello in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Monticello.

Maximum UV Index Levels in Monticello for May

The chart shows the monthly maximum UV Index (UVI) for Monticello 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 Monticello typically reaches 12, which falls under the extreme exposure category.

Data source: Monticello 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 Monticello Compares to Other Months

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

This table compares monthly weather conditions in Monticello, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	35 mm (1.4 inches)	85%	moderate
February Weather	0°C (31°F)	43 mm (1.7 inches)	86%	high
March Weather	5°C (41°F)	53 mm (2.1 inches)	76%	very high
April Weather	10°C (50°F)	18 mm (0.7 inches)	69%	very high
May Weather	15°C (59°F)	28 mm (1.1 inches)	53%	extreme
June Weather	22°C (72°F)	10 mm (0.4 inches)	40%	extreme
July Weather	24°C (76°F)	32 mm (1.3 inches)	36%	extreme
August Weather	23°C (74°F)	21 mm (0.8 inches)	44%	extreme
September Weather	18°C (65°F)	26 mm (1.0 inches)	59%	very high
October Weather	10°C (50°F)	37 mm (1.4 inches)	74%	high
November Weather	4°C (40°F)	19 mm (0.8 inches)	83%	moderate
December Weather	-2°C (29°F)	34 mm (1.3 inches)	85%	moderate