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August Weather in Jamestown, United States

Last updated: June 24, 2025

In August, the average temperature in Jamestown, United States is a pleasant 20°C (68°F). However, temperatures can vary significantly, with a minimum of 7°C (44°F) and soaring up to a maximum of 36°C (97°F). Prepare for a bit of moisture, as precipitation averages 104 mm (4.1 in) over approximately 9 days, coupled with an average humidity of 77%.

August Temperature in Jamestown

In August in Jamestown, the average temperature is 20°C (68°F). Maximum temperatures can reach 36°C (97°F), while minimum temperatures can drop to as low as 7°C (44°F). This makes Jamestown an ideal destination for travelers seeking a pleasant climate, but it's essential to be prepared for a range of temperatures.

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

The chart illustrates August temperature patterns in Jamestown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jamestown, August typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (97°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec12927385568716859432919
Data source: Temperature data for Jamestown 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 Jamestown

In Jamestown in August, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.

August Precipitation Trends in Jamestown

The chart displays monthly precipitation patterns in Jamestown, 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 Jamestown, August typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1719253856838710471741935
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Jamestown

In Jamestown in August, humidity is 77%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace, making it essential for travelers to stay hydrated and take breaks in shaded areas to avoid feeling sluggish in the heat.

August Average Humidity in Jamestown

This chart illustrates the average monthly humidity levels in Jamestown, 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 Jamestown is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%89%82%79%74%78%76%77%72%74%85%85%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Jamestown

In Jamestown in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Jamestown.

Maximum UV Index Levels in Jamestown for August

The chart shows the monthly maximum UV Index (UVI) for Jamestown 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 Jamestown typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910987532
Data source: Jamestown 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 Jamestown Compares to Other Months

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

This table compares monthly weather conditions in Jamestown, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (12°F)17 mm (0.7 inches)87%low
February Weather-13°C (10°F)19 mm (0.8 inches)89%moderate
March Weather-3°C (27°F)25 mm (1.0 inches)82%moderate
April Weather4°C (39°F)38 mm (1.5 inches)79%very high
May Weather13°C (55°F)56 mm (2.2 inches)74%very high
June Weather20°C (68°F)83 mm (3.2 inches)78%very high
July Weather22°C (72°F)87 mm (3.4 inches)76%very high
August Weather20°C (68°F)104 mm (4.1 inches)77%very high
September Weather15°C (60°F)71 mm (2.8 inches)72%high
October Weather6°C (43°F)74 mm (2.9 inches)74%moderate
November Weather-2°C (29°F)19 mm (0.7 inches)85%moderate
December Weather-7°C (19°F)35 mm (1.4 inches)84%low

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