March Weather in Harrisburg, United States

Last updated: June 24, 2025

In Harrisburg, United States, the average temperature in March hovers at a comfortable 12°C (54°F). Expect a chilly minimum of -8°C (18°F) and the potential for a warm maximum of 29°C (84°F). Be prepared for 166 mm (6.5 in) of precipitation spread over 15 days this month, with an average humidity level of 81%, creating a fresh and invigorating atmosphere.

March Temperature in Harrisburg

In March in Harrisburg, the average temperature is 12°C (54°F). The maximum can reach 29°C (84°F), and the minimum can be as low as -8°C (18°F). This varied climate makes Harrisburg an exciting destination for travelers seeking both warmth and the thrill of chilly adventures.

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

The chart illustrates March temperature patterns in Harrisburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harrisburg, March typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (84°F) and lows dropping to around -8°C (18°F).

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

March Precipitation in Harrisburg

In Harrisburg in March, the total precipitation amount is 166 mm (6.5 in) spread across 15 days.

March Precipitation Trends in Harrisburg

The chart displays monthly precipitation patterns in Harrisburg, 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 Harrisburg, March typically receives around 166 mm (6.5 inches) of precipitation spread over approximately 15 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Harrisburg

In Harrisburg in March humidity is 81%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket enveloping you, making travel sluggish and uncomfortable as you battle the stickiness while trying to enjoy your surroundings.

March Average Humidity in Harrisburg

This chart illustrates the average monthly humidity levels in Harrisburg, 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 Harrisburg is approximately 81%, 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 Harrisburg

In Harrisburg 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 Harrisburg.

Maximum UV Index Levels in Harrisburg for March

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

Data source: Harrisburg 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 Harrisburg Compares to Other Months

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

This table compares monthly weather conditions in Harrisburg, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	100 mm (3.9 inches)	84%	moderate
February Weather	7°C (45°F)	172 mm (6.8 inches)	83%	high
March Weather	12°C (54°F)	166 mm (6.5 inches)	81%	very high
April Weather	16°C (61°F)	136 mm (5.4 inches)	81%	very high
May Weather	22°C (72°F)	146 mm (5.8 inches)	83%	extreme
June Weather	26°C (79°F)	114 mm (4.5 inches)	83%	extreme
July Weather	28°C (82°F)	112 mm (4.4 inches)	81%	extreme
August Weather	26°C (80°F)	108 mm (4.3 inches)	74%	very high
September Weather	24°C (76°F)	86 mm (3.4 inches)	71%	very high
October Weather	18°C (64°F)	129 mm (5.1 inches)	76%	high
November Weather	10°C (50°F)	78 mm (3.1 inches)	84%	moderate
December Weather	8°C (46°F)	134 mm (5.3 inches)	88%	moderate