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April Weather in Petersburg, United States

Last updated: June 24, 2025

In April, the average temperature in Petersburg, United States hovers around 11°C (52°F). However, temperatures can swing from a chilly -5°C (23°F) to a warm 30°C (86°F). Expect 103 mm (4.0 in) of precipitation over 13 days, contributing to an average humidity of 84%. Be prepared for a mix of weather as you explore this vibrant locale!

April Temperature in Petersburg

In April in Petersburg, the average temperature is 11°C (52°F), with maximums reaching 30°C (86°F) and minimums dropping as low as -5°C (23°F). This varied climate makes Petersburg a versatile destination for travelers, so be sure to pack for a range of temperatures!

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

The chart illustrates April 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, April typically has an average temperature of 11°C (52°F), with highs reaching up to 30°C (86°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec323742526269747266574237
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.

April Precipitation in Petersburg

In Petersburg in April, the precipitation amount is 103 mm (4.0 in) over a span of 13 days.

April Precipitation Trends in Petersburg

The chart displays monthly precipitation patterns in Petersburg, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Petersburg, April typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec62947710312410189951081066487
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Petersburg

In Petersburg in April, humidity is 84%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket, making it uncomfortable for traveling as the dampness clings to your skin and can leave you feeling sluggish and fatigued.

April Average Humidity in Petersburg

This chart illustrates the average monthly humidity levels in Petersburg, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Petersburg is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%84%78%79%70%59%68%80%87%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Petersburg

In Petersburg in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Petersburg.

Maximum UV Index Levels in Petersburg for April

The chart shows the monthly maximum UV Index (UVI) for Petersburg in April, 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 April, the maximum UV index in Petersburg typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710101010108753
Data source: Petersburg April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)62 mm (2.4 inches)86%moderate
February Weather3°C (38°F)94 mm (3.7 inches)86%moderate
March Weather6°C (43°F)77 mm (3.0 inches)86%high
April Weather11°C (52°F)103 mm (4.0 inches)84%very high
May Weather16°C (62°F)124 mm (4.9 inches)78%very high
June Weather21°C (69°F)100 mm (4.0 inches)79%very high
July Weather24°C (75°F)89 mm (3.5 inches)70%very high
August Weather22°C (72°F)95 mm (3.8 inches)59%very high
September Weather19°C (67°F)108 mm (4.2 inches)68%very high
October Weather14°C (57°F)106 mm (4.2 inches)80%high
November Weather6°C (42°F)64 mm (2.5 inches)86%moderate
December Weather3°C (37°F)87 mm (3.4 inches)85%moderate

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