March Weather in Grantham, United States

Last updated: June 24, 2025

The average temperature in Grantham, United States during March hovers around 0°C (32°F). Expect a minimum of -20°C (-5°F) and a potential maximum of 21°C (70°F). With 71 mm (2.8 in) of precipitation spread across 9 days, the air remains fairly humid at an average of 82%.

March Temperature in Grantham

In March in Grantham, the average temperature is 0°C (32°F). Maximums can reach 21°C (70°F), and minimums can drop as low as -20°C (-5°F). Be prepared for a wide range of temperatures to ensure a comfortable and enjoyable travel experience.

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

The chart illustrates March temperature patterns in Grantham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grantham, March typically has an average temperature of 0°C (32°F), with highs reaching up to 21°C (70°F) and lows dropping to around -20°C (-5°F).

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

March Precipitation in Grantham

In Grantham in March, the precipitation amount is 71 mm (2.8 in) spread over 9 days.

March Precipitation Trends in Grantham

The chart displays monthly precipitation patterns in Grantham, 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 Grantham, March typically receives around 71 mm (2.8 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 Grantham

In Grantham in March, humidity is 82%. With an average temperature of 0°C (32°F), this humidity feels like an icy breath enveloping you, making each step outdoors a challenge as the cold dampness seeps into your clothes, chilling you to the bone and sapping your energy while traveling.

March Average Humidity in Grantham

This chart illustrates the average monthly humidity levels in Grantham, 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 Grantham is approximately 82%, 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 Grantham

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

Maximum UV Index Levels in Grantham for March

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

Data source: Grantham 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 Grantham Compares to Other Months

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

This table compares monthly weather conditions in Grantham, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (22°F)	70 mm (2.7 inches)	86%	moderate
February Weather	-4°C (25°F)	81 mm (3.2 inches)	84%	moderate
March Weather	0°C (32°F)	71 mm (2.8 inches)	82%	high
April Weather	6°C (44°F)	116 mm (4.6 inches)	80%	very high
May Weather	13°C (56°F)	78 mm (3.1 inches)	72%	very high
June Weather	19°C (66°F)	85 mm (3.4 inches)	72%	very high
July Weather	22°C (71°F)	120 mm (4.7 inches)	67%	very high
August Weather	21°C (69°F)	86 mm (3.4 inches)	66%	very high
September Weather	17°C (62°F)	64 mm (2.5 inches)	71%	high
October Weather	10°C (50°F)	132 mm (5.2 inches)	78%	moderate
November Weather	2°C (36°F)	100 mm (3.9 inches)	84%	moderate
December Weather	-3°C (27°F)	102 mm (4.0 inches)	81%	low