August Weather in Monticello, United States

Last updated: June 24, 2025

In August, the average temperature in Monticello, United States hovers around a warm 27°C (81°F). Expect a range where the minimum dips to 19°C (66°F) and the maximum can soar up to 37°C (98°F). During this time, prepare for 170 mm (6.7 in) of precipitation spread across 19 days, contributing to an average humidity of a balmy 79%.

August Temperature in Monticello

In August in Monticello, the average temperature is 27°C (81°F). Maximums can reach 37°C (98°F) and minimums can be as low as 19°C (66°F). This makes it a great time to travel if you enjoy warm weather, but be prepared for some heat during the day and cooler evenings.

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 27°C (81°F), with highs reaching up to 37°C (98°F) and lows dropping to around 19°C (66°F).

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

August Precipitation in Monticello

In Monticello in August, the precipitation amount is 170 mm (6.7 in) over the course of 19 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 170 mm (6.7 inches) of precipitation spread over approximately 19 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

August Humidity in Monticello

In Monticello in August, humidity is 79%. With an average temperature of 27°C (81°F), this humidity feels like a warm and sticky embrace, making travel both challenging and invigorating as the air clings to your skin, urging you to seek shade or a refreshing drink.

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 79%, offering insight into how humid the weather typically is during this month.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	116 mm (4.6 inches)	83%	moderate
February Weather	13°C (56°F)	118 mm (4.6 inches)	83%	high
March Weather	16°C (62°F)	117 mm (4.6 inches)	80%	very high
April Weather	19°C (66°F)	143 mm (5.6 inches)	81%	extreme
May Weather	23°C (74°F)	160 mm (6.3 inches)	81%	extreme
June Weather	26°C (79°F)	158 mm (6.2 inches)	78%	extreme
July Weather	27°C (81°F)	133 mm (5.2 inches)	79%	extreme
August Weather	27°C (81°F)	170 mm (6.7 inches)	79%	extreme
September Weather	26°C (79°F)	114 mm (4.5 inches)	79%	very high
October Weather	21°C (70°F)	98 mm (3.9 inches)	77%	very high
November Weather	14°C (57°F)	83 mm (3.3 inches)	85%	high
December Weather	12°C (53°F)	141 mm (5.6 inches)	88%	moderate