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August Weather in Williston, United States

Last updated: June 24, 2025

In August, the average temperature in Williston, United States hovers around 27°C (81°F). Expect a comfortable minimum of 21°C (70°F), but be prepared for peaks reaching up to 36°C (98°F). With an average precipitation of 194 mm (7.6 in) spread over 23 days, and humidity levels around 78%, it’s a month that invites both warmth and a touch of moisture.

August Temperature in Williston

In August in Williston, the average temperature is 27°C (81°F). Maximum temperatures can reach 36°C (98°F), while minimums can drop as low as 21°C (70°F). This warm climate makes Williston an ideal destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates August temperature patterns in Williston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williston, August typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (98°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec576365707780818180756460
Data source: Temperature data for Williston 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 Williston

In Williston in August, the precipitation amount reaches 194 mm (7.6 in) over a span of 23 days.

August Precipitation Trends in Williston

The chart displays monthly precipitation patterns in Williston, 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 Williston, August typically receives around 194 mm (7.6 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec5163347796168183194125775690
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Williston

In Williston in August humidity is 78%. With an average temperature of 27°C (81°F), this humidity feels like a warm, heavy embrace that makes traveling feel both invigorating and exhausting. Moments spent outside can quickly become clammy and uncomfortable, urging travelers to seek shade and hydration as they explore.

August Average Humidity in Williston

This chart illustrates the average monthly humidity levels in Williston, 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 Williston is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%78%77%75%76%79%78%83%81%83%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Williston

In Williston 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 Williston.

Maximum UV Index Levels in Williston for August

The chart shows the monthly maximum UV Index (UVI) for Williston 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 Williston typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111111110975
Data source: Williston 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 Williston Compares to Other Months

Weather in Williston varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Williston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Williston, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (57°F)51 mm (2.0 inches)83%moderate
February Weather17°C (63°F)63 mm (2.5 inches)82%very high
March Weather19°C (66°F)34 mm (1.3 inches)78%very high
April Weather21°C (71°F)77 mm (3.0 inches)77%extreme
May Weather25°C (77°F)96 mm (3.8 inches)75%extreme
June Weather27°C (80°F)168 mm (6.6 inches)76%extreme
July Weather27°C (81°F)183 mm (7.2 inches)79%extreme
August Weather27°C (81°F)194 mm (7.6 inches)78%extreme
September Weather27°C (80°F)125 mm (4.9 inches)83%very high
October Weather24°C (76°F)77 mm (3.0 inches)81%very high
November Weather18°C (65°F)56 mm (2.2 inches)83%high
December Weather15°C (60°F)90 mm (3.6 inches)86%moderate

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