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March Weather in Sumner, United States

Last updated: June 24, 2025

In Sumner, United States, the average temperature in March hovers around -2°C (29°F). Be prepared for extremes, as temperatures can plummet to a chilly -23°C (-9°F) or rise to a balmy 19°C (66°F). Expect 72 mm (2.8 in) of precipitation spread over 8 days, contributing to an average humidity of 85%. Stay warm and dry!

March Temperature in Sumner

In March in Sumner, the average temperature is -2°C (29°F). Maximum temperatures can reach 19°C (66°F) while minimums can drop as low as -23°C (-9°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.

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

The chart illustrates March temperature patterns in Sumner, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumner, March typically has an average temperature of -2°C (29°F), with highs reaching up to 19°C (66°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec182128415363686760483423
Data source: Temperature data for Sumner 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 Sumner

In Sumner in March, the precipitation amount is 72 mm (2.8 in) over the course of 8 days.

March Precipitation Trends in Sumner

The chart displays monthly precipitation patterns in Sumner, 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 Sumner, March typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec83867212887841339064128107120
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Sumner

In Sumner in March, humidity is 85%. With an average temperature of -2°C (29°F), this humidity feels like a chilling, damp blanket that clings to your skin, making travel uncomfortable and often prompting an urgent search for warmth and shelter.

March Average Humidity in Sumner

This chart illustrates the average monthly humidity levels in Sumner, 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 Sumner is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Sumner

In Sumner 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 Sumner.

Maximum UV Index Levels in Sumner for March

The chart shows the monthly maximum UV Index (UVI) for Sumner 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 Sumner typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910987532
Data source: Sumner 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 Sumner Compares to Other Months

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

This table compares monthly weather conditions in Sumner, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)83 mm (3.3 inches)91%low
February Weather-6°C (21°F)86 mm (3.4 inches)89%moderate
March Weather-2°C (29°F)72 mm (2.8 inches)85%moderate
April Weather5°C (41°F)128 mm (5.0 inches)84%very high
May Weather12°C (54°F)87 mm (3.4 inches)78%very high
June Weather17°C (64°F)84 mm (3.3 inches)72%very high
July Weather20°C (69°F)133 mm (5.2 inches)75%very high
August Weather19°C (67°F)90 mm (3.5 inches)74%very high
September Weather15°C (60°F)64 mm (2.5 inches)77%high
October Weather9°C (48°F)128 mm (5.0 inches)85%moderate
November Weather1°C (34°F)107 mm (4.2 inches)86%moderate
December Weather-5°C (23°F)120 mm (4.7 inches)85%low

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