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August Weather in Petersburg, United States

Last updated: June 24, 2025

In August, the average temperature in Petersburg, United States is a pleasant 22°C (72°F). However, temperatures can fluctuate, with a minimum of 11°C (52°F) and a peak at 34°C (93°F). You'll also want to prepare for some rain, as the area receives about 95 mm (3.8 in) of precipitation over 13 days. With an average humidity of 59%, it's the perfect time to enjoy the moderate climate!

August Temperature in Petersburg

In August in Petersburg, the average temperature is 22°C (72°F). Maximums can reach 34°C (93°F), while minimums can drop to as low as 11°C (52°F). This pleasant climate makes it an ideal time for traveling and outdoor 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 22°C (72°F), with highs reaching up to 34°C (93°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec323742526269747266574237
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 total precipitation amount is 95 mm (3.8 in) over a span of 13 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 95 mm (3.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec62947710312410189951081066487
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 59%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making it a pleasant time for outdoor adventures and sightseeing, though occasional breezes can refresh your experience.

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 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710101010108753
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 Weather0°C (33°F)62 mm (2.4 inches)86%moderate
February Weather3°C (38°F)94 mm (3.7 inches)86%moderate
March Weather6°C (43°F)77 mm (3.0 inches)86%high
April Weather11°C (52°F)103 mm (4.0 inches)84%very high
May Weather16°C (62°F)124 mm (4.9 inches)78%very high
June Weather21°C (69°F)100 mm (4.0 inches)79%very high
July Weather24°C (75°F)89 mm (3.5 inches)70%very high
August Weather22°C (72°F)95 mm (3.8 inches)59%very high
September Weather19°C (67°F)108 mm (4.2 inches)68%very high
October Weather14°C (57°F)106 mm (4.2 inches)80%high
November Weather6°C (42°F)64 mm (2.5 inches)86%moderate
December Weather3°C (37°F)87 mm (3.4 inches)85%moderate

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