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March Weather in Mercer, United States

Last updated: June 24, 2025

In March, the average temperature in Mercer, United States hovers around 4°C (39°F). This month can bring a chilly minimum of -15°C (5°F), while temperatures can reach up to a pleasant 24°C (75°F). Expect approximately 115 mm (4.5 in) of precipitation spread over 15 days, contributing to an average humidity level of 87%.

March Temperature in Mercer

In March in Mercer, the average temperature is 4°C (39°F). Maximum temperatures can reach 24°C (75°F), while the minimum can drop as low as -15°C (5°F). Be prepared for a wide range of temperatures when traveling to Mercer during this time!

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

The chart illustrates March temperature patterns in Mercer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercer, March typically has an average temperature of 4°C (39°F), with highs reaching up to 24°C (75°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec283138486068737165554034
Data source: Temperature data for Mercer 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 Mercer

In Mercer in March, the total precipitation amount is 115 mm (4.5 in) over a span of 15 days.

March Precipitation Trends in Mercer

The chart displays monthly precipitation patterns in Mercer, 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 Mercer, March typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec101110115144149140146105113127109106
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Mercer

In Mercer in March, humidity is 87%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and gritty, as the air hangs heavy and clings to your skin.

March Average Humidity in Mercer

This chart illustrates the average monthly humidity levels in Mercer, 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 Mercer is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Mercer

In Mercer 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 Mercer, you can refer to this Hourly UV Index in Mercer.

Maximum UV Index Levels in Mercer for March

The chart shows the monthly maximum UV Index (UVI) for Mercer 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 Mercer typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Mercer 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 Mercer Compares to Other Months

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

This table compares monthly weather conditions in Mercer, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)101 mm (4.0 inches)88%moderate
February Weather0°C (32°F)110 mm (4.3 inches)88%moderate
March Weather4°C (39°F)115 mm (4.5 inches)87%high
April Weather9°C (49°F)144 mm (5.7 inches)87%very high
May Weather16°C (60°F)149 mm (5.9 inches)81%very high
June Weather20°C (68°F)140 mm (5.5 inches)83%very high
July Weather23°C (73°F)146 mm (5.8 inches)82%very high
August Weather21°C (71°F)105 mm (4.1 inches)76%very high
September Weather19°C (66°F)113 mm (4.4 inches)77%very high
October Weather13°C (55°F)127 mm (5.0 inches)82%high
November Weather4°C (40°F)109 mm (4.3 inches)89%moderate
December Weather1°C (34°F)106 mm (4.2 inches)86%low

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