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October Weather in Petersburg, United States

Last updated: June 24, 2025

In Petersburg, United States, the average temperature in October hovers around 16°C (61°F). However, temperatures can vary significantly, with minimums dipping to -2°C (29°F) and maximums soaring up to 34°C (94°F). During this month, expect approximately 105 mm (4.1 in) of precipitation over 10 days, coupled with an average humidity of 76%.

October Temperature in Petersburg

In October in Petersburg, the average temperature is 16°C (61°F). Maximum temperatures can reach up to 34°C (94°F), while minimums can drop as low as -2°C (29°F). This range makes Petersburg an ideal destination for travelers seeking both warm and cool experiences.

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

The chart illustrates October 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, October typically has an average temperature of 16°C (61°F), with highs reaching up to 34°C (94°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec343847566876797772614540
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.

October Precipitation in Petersburg

In Petersburg in October, the precipitation amount is 105 mm (4.1 in) over the course of 10 days.

October Precipitation Trends in Petersburg

The chart displays monthly precipitation patterns in Petersburg, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Petersburg, October typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec9111714712413712577897710598104
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Petersburg

In Petersburg in October humidity is 76%. With an average temperature of 16°C (61°F), this humidity feels like a warm embrace that makes traveling feel slightly heavy yet refreshing, often prompting you to seek shade or indulge in ice-cold drinks to stay comfortable.

October Average Humidity in Petersburg

This chart illustrates the average monthly humidity levels in Petersburg, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Petersburg is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Petersburg

In Petersburg in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Petersburg, you can refer to this Hourly UV Index in Petersburg.

Maximum UV Index Levels in Petersburg for October

The chart shows the monthly maximum UV Index (UVI) for Petersburg in October, 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 October, the maximum UV index in Petersburg typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3571010111099643
Data source: Petersburg October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)91 mm (3.6 inches)87%moderate
February Weather3°C (38°F)117 mm (4.6 inches)85%moderate
March Weather8°C (48°F)147 mm (5.8 inches)86%high
April Weather13°C (56°F)124 mm (4.9 inches)84%very high
May Weather20°C (68°F)137 mm (5.4 inches)79%very high
June Weather25°C (76°F)125 mm (4.9 inches)82%extreme
July Weather26°C (80°F)77 mm (3.0 inches)79%very high
August Weather25°C (77°F)89 mm (3.5 inches)70%very high
September Weather22°C (73°F)77 mm (3.0 inches)69%very high
October Weather16°C (61°F)105 mm (4.1 inches)76%high
November Weather7°C (45°F)98 mm (3.8 inches)88%moderate
December Weather4°C (40°F)104 mm (4.1 inches)87%moderate

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