nomadseason

May Weather in Monticello, United States

Last updated: June 24, 2025

In May, the average temperature in Monticello, United States is a comfortable 18°C (65°F). However, temperatures can vary significantly, with minimums dipping to 0°C (33°F) and maximums soaring up to 34°C (93°F). Expect precipitation of about 144 mm (5.7 in) over approximately 14 days, and be prepared for a high average humidity of 80% during this time.

May Temperature in Monticello

In May in Monticello, the average temperature is 18°C (65°F). Maximums can reach 34°C (93°F), while minimums can dip as low as 0°C (33°F). Be prepared for a wide range of temperatures during your travels, ensuring you pack both warm and light clothing.

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 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec293143526574777470574136
Data source: Temperature data for Monticello generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Monticello

In Monticello in May, the precipitation amount is 144 mm (5.7 in) over the course of 14 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 144 mm (5.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec777611812414410592101791197454
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Monticello

In Monticello in May, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
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.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)77 mm (3.0 inches)84%moderate
February Weather0°C (32°F)76 mm (3.0 inches)82%moderate
March Weather6°C (43°F)118 mm (4.7 inches)84%high
April Weather11°C (52°F)124 mm (4.9 inches)83%very high
May Weather18°C (65°F)144 mm (5.7 inches)80%very high
June Weather24°C (75°F)105 mm (4.1 inches)83%extreme
July Weather25°C (78°F)92 mm (3.6 inches)82%very high
August Weather23°C (74°F)101 mm (4.0 inches)82%very high
September Weather21°C (70°F)79 mm (3.1 inches)79%very high
October Weather14°C (57°F)118 mm (4.7 inches)79%high
November Weather5°C (42°F)74 mm (2.9 inches)88%moderate
December Weather2°C (36°F)54 mm (2.1 inches)87%moderate

Compare Monticello's Climate with Cities Worldwide