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March Weather in Saint Lawrence, United States

Last updated: June 24, 2025

In March, the average temperature in Saint Lawrence, United States hovers around 6°C (42°F). Be prepared for extremes, as temperatures can plummet to a chilly -21°C (-5°F) or rise to a warm 27°C (81°F). With 103 mm (4.1 in) of precipitation spread over 11 days, it's a good idea to pack your umbrella. Don't forget to note the high average humidity of 85%, which can make the cooler days feel a bit brisker!

March Temperature in Saint Lawrence

In March in Saint Lawrence, the average temperature is 6°C (42°F). Maximums can reach 27°C (81°F) and minimums can drop as low as -21°C (-5°F). This dramatic range in temperatures suggests that travelers should be prepared for varying weather conditions and pack accordingly.

March Weather in Saint Lawrence: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Saint Lawrence, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Lawrence, March typically has an average temperature of 6°C (42°F), with highs reaching up to 27°C (81°F) and lows dropping to around -21°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec343742536372787569594437
Data source: Temperature data for Saint Lawrence 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 Saint Lawrence

In Saint Lawrence in March, the precipitation amount is 103 mm (4.1 in) spread over 11 days.

March Precipitation Trends in Saint Lawrence

The chart displays monthly precipitation patterns in Saint Lawrence, 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 Saint Lawrence, March typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec671051031031361091411511001018799
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Saint Lawrence

In Saint Lawrence in March, humidity is 85%. With an average temperature of 6°C (42°F), this humidity feels like walking through a thick mist, making even short strolls feel damp and chilly, which can be uncomfortable for traveling.

March Average Humidity in Saint Lawrence

This chart illustrates the average monthly humidity levels in Saint Lawrence, 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 Saint Lawrence is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Saint Lawrence

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

Maximum UV Index Levels in Saint Lawrence for March

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

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

This table compares monthly weather conditions in Saint Lawrence, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)67 mm (2.6 inches)87%moderate
February Weather3°C (37°F)105 mm (4.1 inches)85%moderate
March Weather6°C (42°F)103 mm (4.1 inches)85%high
April Weather12°C (53°F)103 mm (4.0 inches)83%very high
May Weather17°C (63°F)136 mm (5.3 inches)75%very high
June Weather22°C (72°F)109 mm (4.3 inches)73%very high
July Weather25°C (78°F)141 mm (5.5 inches)65%very high
August Weather24°C (75°F)151 mm (5.9 inches)62%very high
September Weather21°C (70°F)100 mm (3.9 inches)66%very high
October Weather15°C (59°F)101 mm (4.0 inches)79%high
November Weather7°C (45°F)87 mm (3.4 inches)87%moderate
December Weather3°C (38°F)99 mm (3.9 inches)85%low

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