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March Weather in Kennewick, United States

Last updated: June 24, 2025

In March, the average temperature in Kennewick, United States hovers around 8°C (47°F). However, be prepared for a range, as temperatures can dip as low as -17°C (2°F) or soar to a pleasant 23°C (73°F). This month sees an average precipitation of 26 mm (1.0 in) over approximately 6 days, coupled with a high humidity of 86%, making it a unique time of year in Kennewick.

March Temperature in Kennewick

In March in Kennewick, the average temperature is 8°C (47°F). Maximum temperatures can reach 23°C (73°F), while the minimum can drop as low as -17°C (2°F). This wide temperature range makes it essential to pack layers and prepare for varying weather conditions during your visit.

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

The chart illustrates March temperature patterns in Kennewick, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kennewick, March typically has an average temperature of 8°C (47°F), with highs reaching up to 23°C (73°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec353646566674828069544236
Data source: Temperature data for Kennewick 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 Kennewick

In Kennewick in March, the precipitation amount is 26 mm (1.0 in) over the course of 6 days.

March Precipitation Trends in Kennewick

The chart displays monthly precipitation patterns in Kennewick, 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 Kennewick, March typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec36392622137038233030
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Kennewick

In Kennewick in March, humidity is 86%. With an average temperature of 8°C (47°F), this humidity feels like a chilling damp that penetrates your clothes, making outdoor adventures less enjoyable and encouraging you to seek warmth indoors rather than explore the sights.

March Average Humidity in Kennewick

This chart illustrates the average monthly humidity levels in Kennewick, 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 Kennewick is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%82%77%79%77%62%60%80%87%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Kennewick

In Kennewick 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 Kennewick.

Maximum UV Index Levels in Kennewick for March

The chart shows the monthly maximum UV Index (UVI) for Kennewick 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 Kennewick typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2356991097532
Data source: Kennewick 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 Kennewick Compares to Other Months

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

This table compares monthly weather conditions in Kennewick, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)36 mm (1.4 inches)85%low
February Weather2°C (37°F)39 mm (1.5 inches)86%moderate
March Weather8°C (47°F)26 mm (1.0 inches)86%moderate
April Weather13°C (56°F)22 mm (0.9 inches)82%high
May Weather19°C (67°F)13 mm (0.5 inches)77%very high
June Weather24°C (75°F)7 mm (0.3 inches)79%very high
July Weather28°C (82°F)0 mm (0.0 inches)77%very high
August Weather27°C (80°F)3 mm (0.1 inches)62%very high
September Weather20°C (69°F)8 mm (0.3 inches)60%high
October Weather12°C (54°F)23 mm (0.9 inches)80%moderate
November Weather6°C (42°F)30 mm (1.2 inches)87%moderate
December Weather2°C (36°F)30 mm (1.2 inches)86%low

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