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March Weather in Marietta-Alderwood, United States

Last updated: June 24, 2025

In March, the average temperature in Marietta-Alderwood, United States hovers around 6°C (44°F), with a minimum dipping to -1°C (31°F) and a maximum reaching up to 20°C (67°F). Expect 156 mm (6.2 in) of precipitation spread over 17 days, contributing to a high average humidity of 86%. Prepare for a cool and damp month!

March Temperature in Marietta-Alderwood

In March in Marietta-Alderwood, the average temperature is 6°C (44°F). Maximums can reach 20°C (67°F), while minimums can drop to as low as -1°C (31°F). This temperature range makes Marietta-Alderwood an ideal destination for travelers who enjoy mild weather and the chance to experience both cool and warmer days.

March Weather in Marietta-Alderwood: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Marietta-Alderwood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marietta-Alderwood, March typically has an average temperature of 6°C (44°F), with highs reaching up to 20°C (67°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec413943485358636460514641
Data source: Temperature data for Marietta-Alderwood 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 Marietta-Alderwood

In Marietta-Alderwood in March, the precipitation amount reaches 156 mm (6.2 in) over the course of 17 days.

March Precipitation Trends in Marietta-Alderwood

The chart displays monthly precipitation patterns in Marietta-Alderwood, 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 Marietta-Alderwood, March typically receives around 156 mm (6.2 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec19918515612776582720125186261227
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Marietta-Alderwood

In Marietta-Alderwood in March, humidity is 86%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities quite uncomfortable for traveling.

March Average Humidity in Marietta-Alderwood

This chart illustrates the average monthly humidity levels in Marietta-Alderwood, 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 Marietta-Alderwood is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%86%86%81%83%84%77%76%88%87%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Marietta-Alderwood

In Marietta-Alderwood 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 Marietta-Alderwood.

Maximum UV Index Levels in Marietta-Alderwood for March

The chart shows the monthly maximum UV Index (UVI) for Marietta-Alderwood 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 Marietta-Alderwood typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Marietta-Alderwood 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 Marietta-Alderwood Compares to Other Months

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

This table compares monthly weather conditions in Marietta-Alderwood, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)199 mm (7.8 inches)86%low
February Weather4°C (39°F)185 mm (7.3 inches)85%moderate
March Weather6°C (44°F)156 mm (6.2 inches)86%moderate
April Weather9°C (48°F)127 mm (5.0 inches)86%high
May Weather12°C (53°F)76 mm (3.0 inches)81%very high
June Weather15°C (59°F)58 mm (2.3 inches)83%very high
July Weather17°C (63°F)27 mm (1.1 inches)84%very high
August Weather18°C (64°F)19 mm (0.8 inches)77%very high
September Weather15°C (60°F)125 mm (4.9 inches)76%high
October Weather11°C (51°F)186 mm (7.3 inches)88%moderate
November Weather8°C (46°F)261 mm (10.3 inches)87%low
December Weather5°C (41°F)227 mm (8.9 inches)87%low

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