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March Weather in Petersburg, United States

Last updated: June 24, 2025

In March, the average temperature in Petersburg, United States hovers around 7°C (46°F). Expect a significant temperature range, with minimums plummeting to -15°C (5°F) and maximums reaching up to 26°C (80°F). During this month, anticipate about 135 mm (5.3 in) of precipitation spread over 13 days, contributing to a high average humidity of 87%. Embrace the varied climate while enjoying the beauty of Petersburg!

March Temperature in Petersburg

In March in Petersburg, the average temperature is 7°C (46°F). Maximum temperatures can reach 26°C (80°F), while minimum temperatures can drop as low as -15°C (5°F). It's advisable to pack layers to accommodate both warm days and chilly nights while traveling.

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

The chart illustrates March 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, March typically has an average temperature of 7°C (46°F), with highs reaching up to 26°C (80°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec333745546673777570594439
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.

March Precipitation in Petersburg

In Petersburg in March, the precipitation amount is 135 mm (5.3 in) over the course of 13 days.

March Precipitation Trends in Petersburg

The chart displays monthly precipitation patterns in Petersburg, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Petersburg, March typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8011013512512614611395879893109
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Petersburg

In Petersburg in March humidity is 87%. With an average temperature of 7°C (46°F), this humidity feels like a chilly embrace, making traveling uncomfortable as the dampness seeps through layers of clothing, leaving you feeling cold and clammy.

March Average Humidity in Petersburg

This chart illustrates the average monthly humidity levels in Petersburg, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Petersburg is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%87%85%81%82%81%73%73%78%89%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Petersburg

In Petersburg in March, 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 March

The chart shows the monthly maximum UV Index (UVI) for Petersburg in March, 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 March, the maximum UV index in Petersburg typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098643
Data source: Petersburg March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)80 mm (3.1 inches)88%moderate
February Weather3°C (38°F)110 mm (4.3 inches)88%moderate
March Weather7°C (46°F)135 mm (5.3 inches)87%high
April Weather12°C (55°F)125 mm (4.9 inches)85%very high
May Weather19°C (66°F)126 mm (4.9 inches)81%very high
June Weather23°C (74°F)146 mm (5.7 inches)82%very high
July Weather25°C (78°F)113 mm (4.5 inches)81%very high
August Weather24°C (75°F)95 mm (3.7 inches)73%very high
September Weather21°C (71°F)87 mm (3.4 inches)73%very high
October Weather15°C (59°F)98 mm (3.9 inches)78%high
November Weather7°C (44°F)93 mm (3.7 inches)89%moderate
December Weather4°C (39°F)109 mm (4.3 inches)87%moderate

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