March Weather in Harrisburg, United States

Last updated: June 24, 2025

In Harrisburg, United States, the average temperature in March hovers around 5°C (40°F), but be prepared for a wide range: it can dip to a chilling -23°C (-10°F) or soar up to a pleasant 26°C (80°F). Expect about 67 mm (2.7 in) of precipitation over 9 days, with an average humidity level of 61%.

March Temperature in Harrisburg

In March in Harrisburg, the average temperature is 5°C (40°F). Maximum temperatures can reach 26°C (80°F), while minimums can drop as low as -23°C (-10°F). Be prepared for a wide range of temperatures when traveling during this time.

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 5°C (40°F), with highs reaching up to 26°C (80°F) and lows dropping to around -23°C (-10°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 precipitation amount is 67 mm (2.7 in), occurring over a span of 9 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 67 mm (2.7 inches) of precipitation spread over approximately 9 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 Harrisburg

In Harrisburg in March, humidity is 61%. With an average temperature of 5°C (40°F), this humidity feels like a chill that seeps into your bones, making outdoor activities less pleasant and prompting travelers to bundle up for warmth while navigating the damp, brisk air.

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 61%, 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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check 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 7, which falls under the 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	0°C (32°F)	14 mm (0.6 inches)	72%	moderate
February Weather	-2°C (30°F)	23 mm (0.9 inches)	76%	moderate
March Weather	5°C (40°F)	67 mm (2.7 inches)	61%	high
April Weather	8°C (46°F)	53 mm (2.1 inches)	60%	very high
May Weather	13°C (55°F)	117 mm (4.6 inches)	74%	very high
June Weather	21°C (69°F)	57 mm (2.2 inches)	82%	extreme
July Weather	24°C (75°F)	46 mm (1.8 inches)	82%	extreme
August Weather	22°C (73°F)	35 mm (1.4 inches)	84%	very high
September Weather	19°C (66°F)	24 mm (1.0 inches)	75%	very high
October Weather	9°C (48°F)	36 mm (1.4 inches)	73%	high
November Weather	5°C (42°F)	25 mm (1.0 inches)	74%	moderate
December Weather	1°C (35°F)	18 mm (0.7 inches)	77%	moderate