March Weather in McKinney, United States

Last updated: June 24, 2025

In March, the average temperature in McKinney, United States hovers around 15°C (59°F). Expect a wide range in temperatures, with minimums dipping to -7°C (20°F) and maximums soaring to 30°C (87°F). The month sees approximately 134 mm (5.3 in) of precipitation spread over 11 days, contributing to a notable average humidity of 78%.

March Temperature in McKinney

In March in McKinney, the average temperature is 15°C (59°F). The maximum can reach 30°C (87°F), while the minimum can be as low as -7°C (20°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your trip.

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

The chart illustrates March temperature patterns in McKinney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McKinney, March typically has an average temperature of 15°C (59°F), with highs reaching up to 30°C (87°F) and lows dropping to around -7°C (20°F).

Data source: Temperature data for McKinney generated using information from the Copernicus Climate Change Service.

March Precipitation in McKinney

In McKinney in March, the precipitation amount is 134 mm (5.3 in) spread over 11 days.

March Precipitation Trends in McKinney

The chart displays monthly precipitation patterns in McKinney, 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 McKinney, March typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in McKinney

In McKinney in March, humidity is 78%. With an average temperature of 15°C (59°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making outdoor activities a bit more tiring and requiring frequent breaks for hydration as you explore the area.

March Average Humidity in McKinney

This chart illustrates the average monthly humidity levels in McKinney, 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 McKinney is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in McKinney

In McKinney in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in McKinney.

Maximum UV Index Levels in McKinney for March

The chart shows the monthly maximum UV Index (UVI) for McKinney 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 McKinney typically reaches 8, which falls under the very high exposure category.

Data source: McKinney 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 McKinney Compares to Other Months

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

This table compares monthly weather conditions in McKinney, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	65 mm (2.6 inches)	80%	moderate
February Weather	9°C (48°F)	104 mm (4.1 inches)	79%	high
March Weather	15°C (59°F)	134 mm (5.3 inches)	78%	very high
April Weather	18°C (64°F)	144 mm (5.7 inches)	78%	very high
May Weather	23°C (73°F)	180 mm (7.1 inches)	81%	extreme
June Weather	27°C (81°F)	100 mm (4.0 inches)	78%	extreme
July Weather	29°C (84°F)	58 mm (2.3 inches)	73%	extreme
August Weather	29°C (84°F)	96 mm (3.8 inches)	66%	extreme
September Weather	26°C (79°F)	98 mm (3.8 inches)	65%	very high
October Weather	19°C (67°F)	157 mm (6.2 inches)	72%	very high
November Weather	13°C (56°F)	58 mm (2.3 inches)	82%	high
December Weather	10°C (51°F)	73 mm (2.9 inches)	87%	moderate