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October Weather in Petersburg, United States

Last updated: June 24, 2025

In October, the average temperature in Petersburg, United States hovers around 16°C (61°F), making it a pleasant time of year. However, be prepared for a range of temperatures, with minimums dipping to -6°C (22°F) and maximums reaching up to 36°C (97°F). Expect about 46 mm (1.8 in) of precipitation over 5 days, and note that the average humidity is around 70%, adding to the unique atmosphere of the season.

October Temperature in Petersburg

In October in Petersburg, the average temperature is 16°C (61°F). Maximum temperatures can reach 36°C (97°F), while the minimum can drop to as low as -6°C (22°F). Be prepared for a wide range of weather conditions when traveling during this time.

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 36°C (97°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec404354607078818073615044
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 46 mm (1.8 in) recorded over a span of 5 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 46 mm (1.8 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec181348366855303558461619
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 70%. With an average temperature of 16°C (61°F), this humidity feels like a warm, damp blanket wrapping around you, making travel somewhat uncomfortable as you navigate the sticky air while trying to enjoy your surroundings.

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 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%74%66%70%75%79%78%71%69%70%82%82%
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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111112121210864
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 Weather5°C (41°F)18 mm (0.7 inches)75%moderate
February Weather6°C (43°F)13 mm (0.5 inches)74%high
March Weather12°C (54°F)48 mm (1.9 inches)66%very high
April Weather16°C (60°F)36 mm (1.4 inches)70%extreme
May Weather21°C (71°F)68 mm (2.7 inches)75%extreme
June Weather26°C (78°F)55 mm (2.2 inches)79%extreme
July Weather27°C (81°F)30 mm (1.2 inches)78%extreme
August Weather27°C (80°F)35 mm (1.4 inches)71%extreme
September Weather23°C (74°F)57 mm (2.3 inches)69%very high
October Weather16°C (61°F)46 mm (1.8 inches)70%very high
November Weather10°C (51°F)16 mm (0.6 inches)82%high
December Weather7°C (44°F)19 mm (0.7 inches)82%moderate

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