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March Weather in Merton, United States

Last updated: June 24, 2025

In March, the average temperature in Merton, United States hovers around 2°C (36°F). However, brace yourself for a wide range, as temperatures can plunge to a brisk -24°C (-10°F) or climb to a balmy 20°C (69°F). Expect 61 mm (2.4 in) of precipitation spread over 9 days, contributing to an average humidity level of a sweltering 85%. Prepare for a month of varied weather!

March Temperature in Merton

In March in Merton, the average temperature is 2°C (36°F). Maximums can reach 20°C (68°F), while minimums can drop as low as -24°C (-10°F). It's essential to prepare for a wide range of temperatures if you're planning to visit during this time.

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

The chart illustrates March temperature patterns in Merton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merton, March typically has an average temperature of 2°C (36°F), with highs reaching up to 20°C (69°F) and lows dropping to around -24°C (-10°F).
JanFebMarAprMayJunJulAugSepOctNovDec222436455869747165523730
Data source: Temperature data for Merton 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 Merton

In Merton in March, the precipitation amount is 61 mm (2.4 in) spread over 9 days.

March Precipitation Trends in Merton

The chart displays monthly precipitation patterns in Merton, 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 Merton, March typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5451611071261069788981124646
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Merton

In Merton in March, humidity is 85%. With an average temperature of 2°C (36°F), this humidity feels like an icy blanket clinging to your skin, making travel challenging as the cold dampness seeps into your bones and fogs your breath.

March Average Humidity in Merton

This chart illustrates the average monthly humidity levels in Merton, 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 Merton is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Merton

In Merton in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Merton.

Maximum UV Index Levels in Merton for March

The chart shows the monthly maximum UV Index (UVI) for Merton 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 Merton typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Merton 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 Merton Compares to Other Months

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

This table compares monthly weather conditions in Merton, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)54 mm (2.1 inches)85%moderate
February Weather-5°C (24°F)51 mm (2.0 inches)85%moderate
March Weather2°C (36°F)61 mm (2.4 inches)85%moderate
April Weather7°C (45°F)107 mm (4.2 inches)85%very high
May Weather14°C (58°F)126 mm (5.0 inches)78%very high
June Weather20°C (69°F)106 mm (4.2 inches)80%very high
July Weather23°C (74°F)97 mm (3.8 inches)78%very high
August Weather22°C (71°F)87 mm (3.4 inches)76%very high
September Weather18°C (65°F)98 mm (3.9 inches)79%high
October Weather11°C (52°F)112 mm (4.4 inches)83%moderate
November Weather3°C (37°F)46 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)46 mm (1.8 inches)81%low

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