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March Weather in Houston, United States

Last updated: June 24, 2025

In March, the average temperature in Houston, United States is a brisk 6°C (42°F). Visitors should be prepared for a wide temperature range, with lows of -16°C (3°F) and highs reaching up to 25°C (78°F). Precipitation during this month averages 112 mm (4.4 in) across 13 days, contributing to an average humidity level of 87%.

March Temperature in Houston

In March in Houston, the average temperature is 6°C (42°F), with maximums reaching 25°C (78°F) and minimums dropping as low as -16°C (3°F). It's advisable to pack layers and be prepared for a wide range of temperatures while exploring.

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

The chart illustrates March temperature patterns in Houston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Houston, March typically has an average temperature of 6°C (42°F), with highs reaching up to 25°C (78°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec323642526370757368574237
Data source: Temperature data for Houston 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 Houston

In Houston in March, the precipitation amount is 112 mm (4.4 in) over the course of 13 days.

March Precipitation Trends in Houston

The chart displays monthly precipitation patterns in Houston, 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 Houston, March typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec881211121301391471428812412288106
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Houston

In Houston in March humidity is 87%. With an average temperature of 6°C (42°F), this humidity feels like a persistent chill that seeps into your bones, making it uncomfortable for traveling and leaving you longing for warmth at every turn.

March Average Humidity in Houston

This chart illustrates the average monthly humidity levels in Houston, 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 Houston is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Houston

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

Maximum UV Index Levels in Houston for March

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

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

This table compares monthly weather conditions in Houston, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)88 mm (3.5 inches)88%moderate
February Weather2°C (36°F)121 mm (4.8 inches)88%moderate
March Weather6°C (42°F)112 mm (4.4 inches)87%high
April Weather11°C (52°F)130 mm (5.1 inches)87%very high
May Weather17°C (63°F)138 mm (5.5 inches)81%very high
June Weather21°C (70°F)147 mm (5.8 inches)83%very high
July Weather24°C (75°F)142 mm (5.6 inches)82%very high
August Weather23°C (73°F)88 mm (3.5 inches)76%very high
September Weather20°C (68°F)124 mm (4.9 inches)77%very high
October Weather14°C (58°F)122 mm (4.8 inches)82%high
November Weather6°C (43°F)88 mm (3.5 inches)89%moderate
December Weather3°C (37°F)106 mm (4.2 inches)86%low

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