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August Weather in Monticello, United States

Last updated: June 24, 2025

In August, the average temperature in Monticello, United States is a warm 28°C (83°F). Expect a comfortable minimum of 19°C (66°F), while the maximum can soar up to 37°C (100°F). Rainfall is a consideration, with an average of 91 mm (3.6 in) spread over 11 days. The air is quite humid, with an average humidity level of 75%, creating a tropical feel throughout the month.

August Temperature in Monticello

In August in Monticello, the average temperature is 28°C (83°F), with maximums reaching up to 37°C (100°F) and minimums dropping as low as 19°C (66°F). It's advisable to be prepared for both warm days and cooler evenings when traveling to this destination.

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

The chart illustrates August 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, August typically has an average temperature of 28°C (83°F), with highs reaching up to 37°C (100°F) and lows dropping to around 19°C (66°F).
JanFebMarAprMayJunJulAugSepOctNovDec485261657480838280695552
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.

August Precipitation in Monticello

In Monticello in August, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

August Precipitation Trends in Monticello

The chart displays monthly precipitation patterns in Monticello, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Monticello, August typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec125199141176125106107917213191128
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Monticello

In Monticello in August humidity is 75%. With an average temperature of 28°C (83°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel particularly heavy, and prompting frequent breaks in the shade to stay comfortable while traveling.

August Average Humidity in Monticello

This chart illustrates the average monthly humidity levels in Monticello, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Monticello is approximately 75%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Monticello

In Monticello in August, 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 August

The chart shows the monthly maximum UV Index (UVI) for Monticello in August, 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 August, the maximum UV index in Monticello typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111112121110864
Data source: Monticello August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)125 mm (4.9 inches)84%moderate
February Weather11°C (53°F)199 mm (7.8 inches)83%high
March Weather16°C (61°F)141 mm (5.6 inches)80%very high
April Weather18°C (65°F)176 mm (6.9 inches)82%extreme
May Weather23°C (74°F)125 mm (4.9 inches)83%extreme
June Weather27°C (80°F)106 mm (4.2 inches)80%extreme
July Weather28°C (83°F)107 mm (4.2 inches)80%extreme
August Weather28°C (83°F)91 mm (3.6 inches)75%extreme
September Weather27°C (80°F)72 mm (2.8 inches)73%very high
October Weather21°C (69°F)131 mm (5.2 inches)76%very high
November Weather13°C (56°F)91 mm (3.6 inches)84%high
December Weather11°C (52°F)128 mm (5.0 inches)88%moderate

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