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March Weather in Petersburg, United States

Last updated: June 24, 2025

In Petersburg, United States, the average temperature in March hovers around 1°C (35°F), with a minimum dipping to -13°C (9°F) and a maximum reaching 16°C (60°F). Prepare for wet weather, as the region experiences about 177 mm (7.0 in) of precipitation over 17 days. With an average humidity of 86%, it’s a month where you’ll definitely want to bundle up!

March Temperature in Petersburg

In March in Petersburg, the average temperature is 1°C (35°F). Maximum temperatures can reach 16°C (60°F), while minimums can dip to as low as -13°C (9°F). Be prepared for chilly conditions and dress warmly when traveling during this time.

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 1°C (35°F), with highs reaching up to 16°C (60°F) and lows dropping to around -13°C (9°F).
JanFebMarAprMayJunJulAugSepOctNovDec302935425055595854433732
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 total precipitation amount is 177 mm (7.0 in) spread over 17 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 177 mm (7.0 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec225177177190160206195297288276309258
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 86%. With an average temperature of 1°C (35°F), this humidity feels like a biting chill that wraps around you, making outdoor exploration uncomfortable and requiring extra layers to stay warm while navigating the damp air.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%84%86%88%88%96%110%111%104%96%92%91%
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 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Petersburg, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123566775311
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 Weather-1°C (30°F)225 mm (8.9 inches)88%low
February Weather-2°C (29°F)176 mm (6.9 inches)84%low
March Weather1°C (35°F)177 mm (7.0 inches)86%moderate
April Weather5°C (42°F)190 mm (7.5 inches)88%moderate
May Weather10°C (50°F)160 mm (6.3 inches)88%high
June Weather13°C (55°F)206 mm (8.1 inches)96%high
July Weather15°C (59°F)195 mm (7.7 inches)110%high
August Weather15°C (59°F)297 mm (11.7 inches)111%high
September Weather12°C (54°F)288 mm (11.3 inches)104%moderate
October Weather6°C (44°F)276 mm (10.9 inches)96%moderate
November Weather3°C (38°F)309 mm (12.2 inches)92%low
December Weather0°C (33°F)258 mm (10.2 inches)91%low

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