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August Weather in Petersburg, United States

Last updated: June 24, 2025

In August, the average temperature in Petersburg, United States hovers around 24°C (75°F), with a minimum of 11°C (53°F) and a maximum reaching 34°C (93°F). Expect precipitation of 86 mm (3.4 in) spread over 10 days, contributing to the region's average humidity of 82%.

August Temperature in Petersburg

In August in Petersburg, the average temperature is 24°C (75°F). Maximums can reach 34°C (93°F), while minimums can be as low as 11°C (53°F). This makes it an ideal time for travelers seeking pleasant weather and a variety of activities.

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

The chart illustrates August temperature patterns in Petersburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Petersburg, August typically has an average temperature of 24°C (75°F), with highs reaching up to 34°C (93°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec283143526575777471574236
Data source: Temperature data for Petersburg 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 Petersburg

In Petersburg in August, the precipitation amount is 86 mm (3.4 in) over the course of 10 days.

August Precipitation Trends in Petersburg

The chart displays monthly precipitation patterns in Petersburg, 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 Petersburg, August typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec676713212714613011786661086752
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Petersburg

In Petersburg in August, humidity is 82%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making travel feel sticky and heavy on the skin, often requiring more frequent breaks and hydration.

August Average Humidity in Petersburg

This chart illustrates the average monthly humidity levels in Petersburg, 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 Petersburg is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Petersburg

In Petersburg 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 Petersburg.

Maximum UV Index Levels in Petersburg for August

The chart shows the monthly maximum UV Index (UVI) for Petersburg 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 Petersburg typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111198643
Data source: Petersburg 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 Petersburg Compares to Other Months

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

This table compares monthly weather conditions in Petersburg, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)67 mm (2.6 inches)84%moderate
February Weather0°C (32°F)67 mm (2.6 inches)82%moderate
March Weather6°C (44°F)132 mm (5.2 inches)84%high
April Weather11°C (53°F)127 mm (5.0 inches)83%very high
May Weather18°C (66°F)146 mm (5.7 inches)80%very high
June Weather24°C (75°F)130 mm (5.1 inches)83%extreme
July Weather25°C (78°F)117 mm (4.6 inches)82%extreme
August Weather24°C (75°F)86 mm (3.4 inches)82%very high
September Weather22°C (71°F)66 mm (2.6 inches)79%very high
October Weather14°C (57°F)108 mm (4.3 inches)79%high
November Weather5°C (42°F)67 mm (2.6 inches)88%moderate
December Weather2°C (36°F)52 mm (2.0 inches)87%moderate

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