March Weather in Petersburg, United States

Last updated: June 24, 2025

In March, the average temperature in Petersburg, United States hovers around 6°C (44°F). Temperatures can dip as low as -18°C (1°F), while they can reach a balmy 25°C (78°F) at the other extreme. Expect 132 mm (5.2 in) of precipitation over 11 days, accompanied by a high average humidity of 84%. Prepare accordingly! 🌧️🌡️

March Temperature in Petersburg

In March in Petersburg, the average temperature is 6°C (44°F). Maximums can reach 25°C (78°F), while minimums can drop as low as -18°C (1°F). Be prepared for a wide range of temperatures if you're planning to travel 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 6°C (44°F), with highs reaching up to 25°C (78°F) and lows dropping to around -18°C (1°F).

Data source: Temperature data for Petersburg generated using information from the Copernicus Climate Change Service.

March Precipitation in Petersburg

In Petersburg in March, the precipitation amount is 132 mm (5.2 in), which occurs over a span of 11 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 132 mm (5.2 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Petersburg

In Petersburg in March humidity is 84%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and necessitating layered clothing to stay warm and dry while exploring the area.

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 84%, offering insight into how humid the weather typically is during this month.

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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the 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 7, which falls under the high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	67 mm (2.6 inches)	84%	moderate
February Weather	0°C (32°F)	67 mm (2.6 inches)	82%	moderate
March Weather	6°C (44°F)	132 mm (5.2 inches)	84%	high
April Weather	11°C (53°F)	127 mm (5.0 inches)	83%	very high
May Weather	18°C (66°F)	146 mm (5.7 inches)	80%	very high
June Weather	24°C (75°F)	130 mm (5.1 inches)	83%	extreme
July Weather	25°C (78°F)	117 mm (4.6 inches)	82%	extreme
August Weather	24°C (75°F)	86 mm (3.4 inches)	82%	very high
September Weather	22°C (71°F)	66 mm (2.6 inches)	79%	very high
October Weather	14°C (57°F)	108 mm (4.3 inches)	79%	high
November Weather	5°C (42°F)	67 mm (2.6 inches)	88%	moderate
December Weather	2°C (36°F)	52 mm (2.0 inches)	87%	moderate