May Weather in Monticello, United States

Last updated: June 24, 2025

In May, the average temperature in Monticello, United States is a pleasant 23°C (73°F). However, be prepared for a range, as minimums can drop to 9°C (48°F) and maximums can soar to 35°C (95°F). This month also sees an average precipitation of 147 mm (5.8 in) spread over 12 days, complemented by a fairly high humidity level of 83%. Stay hydrated and enjoy the vibrant climate!

May Temperature in Monticello

In May in Monticello, the average temperature is 23°C (73°F). The maximum can reach 35°C (95°F), while the minimum can drop to as low as 9°C (48°F). This variety in temperatures makes Monticello an ideal destination for travelers seeking a mix of warm days and cooler evenings.

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 23°C (73°F), with highs reaching up to 35°C (95°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec454959637380828177665350
Data source: Temperature data for Monticello generated using information from the Copernicus Climate Change Service.
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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 147 mm (5.8 in) over a span of 12 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 147 mm (5.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec115183179163148118971119215075142
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Monticello

In Monticello in May, humidity is 83%. With an average temperature of 23°C (73°F), this humidity feels like a heavy blanket wrapping around you, making travel slightly uncomfortable and causing you to break a sweat as you explore.

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 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%80%82%83%80%80%75%73%76%84%88%
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 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 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111211119764
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 Weather7°C (46°F)115 mm (4.5 inches)84%moderate
February Weather9°C (49°F)183 mm (7.2 inches)83%high
March Weather15°C (59°F)179 mm (7.1 inches)80%very high
April Weather17°C (63°F)163 mm (6.4 inches)82%very high
May Weather23°C (73°F)147 mm (5.8 inches)83%extreme
June Weather26°C (80°F)118 mm (4.6 inches)80%extreme
July Weather28°C (83°F)97 mm (3.8 inches)80%extreme
August Weather27°C (82°F)111 mm (4.4 inches)75%extreme
September Weather25°C (78°F)91 mm (3.6 inches)73%very high
October Weather19°C (67°F)150 mm (5.9 inches)76%high
November Weather12°C (53°F)75 mm (3.0 inches)84%high
December Weather10°C (50°F)142 mm (5.6 inches)88%moderate

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