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August Weather in Sistersville, United States

Last updated: June 24, 2025

In August, the average temperature in Sistersville, United States hovers around 23°C (74°F). Expect a minimum of 13°C (55°F) and a maximum that can reach up to 34°C (93°F). Be prepared for some rain, with 100 mm (3.9 in) of precipitation over approximately 13 days. With an average humidity level of 73%, it’s a great idea to stay hydrated and enjoy the vibrant atmosphere!

August Temperature in Sistersville

In August in Sistersville, the average temperature is 23°C (74°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop to as low as 13°C (55°F). This pleasant climate makes Sistersville an ideal destination for travelers seeking a comfortable and enjoyable experience during their visit.

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

The chart illustrates August temperature patterns in Sistersville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sistersville, August typically has an average temperature of 23°C (74°F), with highs reaching up to 34°C (93°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec333844546471757369594438
Data source: Temperature data for Sistersville 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 Sistersville

In Sistersville in August, the total precipitation amount is 100 mm (3.9 in), occurring over a span of 13 days.

August Precipitation Trends in Sistersville

The chart displays monthly precipitation patterns in Sistersville, 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 Sistersville, August typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec9312811514814117012710010511486118
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Sistersville

In Sistersville in August, humidity is 73%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping blanket, making traveling a bit sweaty and heavy, but still pleasant if you stay hydrated and take breaks in the shade.

August Average Humidity in Sistersville

This chart illustrates the average monthly humidity levels in Sistersville, 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 Sistersville is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%87%82%84%82%73%74%81%89%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Sistersville

In Sistersville in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Sistersville.

Maximum UV Index Levels in Sistersville for August

The chart shows the monthly maximum UV Index (UVI) for Sistersville 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 Sistersville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098643
Data source: Sistersville 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 Sistersville Compares to Other Months

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

This table compares monthly weather conditions in Sistersville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)93 mm (3.7 inches)88%moderate
February Weather3°C (38°F)128 mm (5.0 inches)88%moderate
March Weather7°C (45°F)115 mm (4.5 inches)88%high
April Weather12°C (54°F)148 mm (5.8 inches)86%very high
May Weather18°C (64°F)141 mm (5.6 inches)82%very high
June Weather22°C (71°F)170 mm (6.7 inches)84%very high
July Weather24°C (76°F)126 mm (5.0 inches)82%very high
August Weather23°C (74°F)100 mm (3.9 inches)73%very high
September Weather21°C (69°F)105 mm (4.1 inches)73%very high
October Weather15°C (59°F)114 mm (4.5 inches)81%high
November Weather7°C (44°F)86 mm (3.4 inches)89%moderate
December Weather4°C (39°F)118 mm (4.7 inches)86%moderate

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