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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 27°C (82°F). Temperatures can vary, with minimums reaching 19°C (66°F) and maximums soaring to 37°C (99°F). You can expect an average precipitation of 111 mm (4.4 in) spread over about 10 days, alongside a relatively high average humidity of 75%.

August Temperature in Monticello

In August in Monticello, the average temperature is 27°C (82°F). The maximum can reach 37°C (99°F), and the minimum can be as low as 19°C (66°F). This makes it an ideal time for travelers seeking warm weather and outdoor activities.

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 (82°F), with highs reaching up to 37°C (99°F) and lows dropping to around 19°C (66°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.

August Precipitation in Monticello

In Monticello in August, the precipitation amount is 111 mm (4.4 in) over a span of 10 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 111 mm (4.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec115183179163148118971119215075142
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 27°C (82°F), this humidity feels like a warm blanket enveloping you, making sightseeing comfortable yet sticky, and prompting travelers to seek shade and refreshing drinks during their adventures.

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.
JanFebMarAprMayJunJulAugSepOctNovDec47810111211119764
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 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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