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March Weather in Herculaneum, United States

Last updated: June 24, 2025

In Herculaneum, United States, the average temperature in March is a brisk 9°C (48°F). However, be prepared for extremes: temperatures can plummet to a chilling -16°C (3°F) or soar to a warm 28°C (83°F). This month, anticipate approximately 132 mm (5.2 in) of precipitation over 12 days, contributing to a high average humidity of 80%.

March Temperature in Herculaneum

In March in Herculaneum, the average temperature is 9°C (48°F), with maximums reaching 28°C (83°F) and minimums dropping as low as -16°C (3°F). Be prepared for a wide range of temperatures when traveling to Herculaneum during this month.

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

The chart illustrates March temperature patterns in Herculaneum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herculaneum, March typically has an average temperature of 9°C (48°F), with highs reaching up to 28°C (83°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec333648556776797672594540
Data source: Temperature data for Herculaneum 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 Herculaneum

In Herculaneum in March, the precipitation amount is 132 mm (5.2 in) over the course of 12 days.

March Precipitation Trends in Herculaneum

The chart displays monthly precipitation patterns in Herculaneum, 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 Herculaneum, March typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec77841321371438889124691047162
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Herculaneum

In Herculaneum in March humidity is 80%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel quite uncomfortable.

March Average Humidity in Herculaneum

This chart illustrates the average monthly humidity levels in Herculaneum, 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 Herculaneum is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Herculaneum

In Herculaneum 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 Herculaneum.

Maximum UV Index Levels in Herculaneum for March

The chart shows the monthly maximum UV Index (UVI) for Herculaneum 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 Herculaneum typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109753
Data source: Herculaneum 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 Herculaneum Compares to Other Months

Weather in Herculaneum varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Herculaneum, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Herculaneum, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)77 mm (3.0 inches)82%moderate
February Weather2°C (37°F)84 mm (3.3 inches)80%moderate
March Weather9°C (48°F)132 mm (5.2 inches)80%high
April Weather13°C (56°F)137 mm (5.4 inches)80%very high
May Weather19°C (67°F)143 mm (5.6 inches)82%very high
June Weather24°C (76°F)88 mm (3.5 inches)83%extreme
July Weather26°C (80°F)89 mm (3.5 inches)81%very high
August Weather25°C (76°F)124 mm (4.9 inches)80%very high
September Weather22°C (72°F)68 mm (2.7 inches)76%very high
October Weather15°C (59°F)104 mm (4.1 inches)76%high
November Weather7°C (45°F)71 mm (2.8 inches)85%moderate
December Weather4°C (40°F)62 mm (2.5 inches)86%moderate

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