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March Weather in Port Barrington, United States

Last updated: June 24, 2025

In Port Barrington, United States, the average temperature in March hovers around 3°C (38°F). However, temperatures can swing dramatically, with a minimum of -21°C (-6°F) and a maximum of 25°C (78°F). Expect about 71 mm (2.8 in) of precipitation spread over 10 days, contributing to an average humidity level of 85%. Stay prepared for a variety of weather conditions!

March Temperature in Port Barrington

In March in Port Barrington, the average temperature is 3°C (38°F). Maximums can reach 25°C (78°F) and minimums can be as low as -21°C (-6°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and lighter clothing.

March Weather in Port Barrington: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Port Barrington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Barrington, March typically has an average temperature of 3°C (38°F), with highs reaching up to 25°C (78°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec242638475970757267533832
Data source: Temperature data for Port Barrington 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 Port Barrington

In Port Barrington in March, the precipitation amount is 71 mm (2.8 in) over a duration of 10 days.

March Precipitation Trends in Port Barrington

The chart displays monthly precipitation patterns in Port Barrington, 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 Port Barrington, March typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec6159711151631149191891215053
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Port Barrington

In Port Barrington in March, humidity is 85%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable as you contend with the heavy, cold air surrounding you.

March Average Humidity in Port Barrington

This chart illustrates the average monthly humidity levels in Port Barrington, 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 Port Barrington 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 Port Barrington

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

Maximum UV Index Levels in Port Barrington for March

The chart shows the monthly maximum UV Index (UVI) for Port Barrington 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 Port Barrington typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Port Barrington 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 Port Barrington Compares to Other Months

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

This table compares monthly weather conditions in Port Barrington, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)61 mm (2.4 inches)85%moderate
February Weather-3°C (27°F)59 mm (2.3 inches)85%moderate
March Weather3°C (38°F)71 mm (2.8 inches)85%high
April Weather8°C (47°F)114 mm (4.5 inches)85%very high
May Weather15°C (60°F)163 mm (6.4 inches)78%very high
June Weather21°C (71°F)114 mm (4.5 inches)80%very high
July Weather24°C (75°F)91 mm (3.6 inches)78%very high
August Weather22°C (73°F)91 mm (3.6 inches)76%very high
September Weather19°C (67°F)89 mm (3.5 inches)79%very high
October Weather12°C (54°F)121 mm (4.8 inches)83%moderate
November Weather3°C (38°F)50 mm (2.0 inches)88%moderate
December Weather0°C (32°F)53 mm (2.1 inches)81%low

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