March Weather in Northwest Harwinton, United States

Last updated: June 24, 2025

In March, the average temperature in Northwest Harwinton, United States hovers around 3°C (38°F). Expect extremes, with lows dropping to -16°C (3°F) and highs peaking at a warm 24°C (75°F). The month brings about 91 mm (3.6 in) of precipitation spread over 9 days, and with an average humidity of 81%, it’s a time of significant atmospheric moisture.

March Temperature in Northwest Harwinton

In March in Northwest Harwinton, the average temperature is 3°C (38°F). Maximums can reach up to 24°C (75°F), while minimums can drop as low as -16°C (3°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for their trip.

March Weather in Northwest Harwinton: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Northwest Harwinton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Northwest Harwinton, March typically has an average temperature of 3°C (38°F), with highs reaching up to 24°C (75°F) and lows dropping to around -16°C (3°F).

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

March Precipitation in Northwest Harwinton

In Northwest Harwinton in March, the precipitation amount is 91 mm (3.6 in) spread over 9 days.

March Precipitation Trends in Northwest Harwinton

The chart displays monthly precipitation patterns in Northwest Harwinton, 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 Northwest Harwinton, March typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 9 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 Northwest Harwinton

In Northwest Harwinton in March, humidity is 81%. With an average temperature of 3°C (38°F), this humidity feels like a heavy blanket wrapped around you, making outdoor activities uncomfortable and travel challenging due to the cold, damp air.

March Average Humidity in Northwest Harwinton

This chart illustrates the average monthly humidity levels in Northwest Harwinton, 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 Northwest Harwinton 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 Northwest Harwinton

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

Maximum UV Index Levels in Northwest Harwinton for March

The chart shows the monthly maximum UV Index (UVI) for Northwest Harwinton 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 Northwest Harwinton typically reaches 6, which falls under the high exposure category.

Data source: Northwest Harwinton 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 Northwest Harwinton Compares to Other Months

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

This table compares monthly weather conditions in Northwest Harwinton, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	73 mm (2.9 inches)	84%	moderate
February Weather	0°C (32°F)	93 mm (3.7 inches)	82%	moderate
March Weather	3°C (38°F)	91 mm (3.6 inches)	81%	high
April Weather	9°C (48°F)	136 mm (5.3 inches)	78%	very high
May Weather	15°C (59°F)	120 mm (4.7 inches)	69%	very high
June Weather	20°C (69°F)	103 mm (4.1 inches)	69%	very high
July Weather	23°C (74°F)	162 mm (6.4 inches)	62%	very high
August Weather	22°C (73°F)	107 mm (4.2 inches)	65%	very high
September Weather	19°C (66°F)	122 mm (4.8 inches)	68%	very high
October Weather	13°C (56°F)	152 mm (6.0 inches)	74%	high
November Weather	5°C (42°F)	95 mm (3.7 inches)	82%	moderate
December Weather	1°C (33°F)	123 mm (4.9 inches)	80%	low