March Weather in Saint Johns, United States

Last updated: June 24, 2025

In March, the average temperature in Saint Johns, United States hovers around 2°C (36°F), with possibilities of dropping to a frigid -19°C (-1°F) or peaking at a comfortable 22°C (72°F). You can expect about 63 mm (2.5 in) of precipitation over 9 days, accompanied by a high average humidity of 85%. 🌧️

March Temperature in Saint Johns

In March in Saint Johns, the average temperature is 2°C (36°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -19°C (-1°F). This wide temperature range means travelers should prepare for both chilly and relatively warm conditions during their visit.

March Weather in Saint Johns: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Saint Johns, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Johns, March typically has an average temperature of 2°C (36°F), with highs reaching up to 22°C (72°F) and lows dropping to around -19°C (-1°F).

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

March Precipitation in Saint Johns

In Saint Johns in March, the total precipitation amount is 63 mm (2.5 in) spread over a duration of 9 days.

March Precipitation Trends in Saint Johns

The chart displays monthly precipitation patterns in Saint Johns, 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 Saint Johns, March typically receives around 63 mm (2.5 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 Saint Johns

In Saint Johns in March, humidity is 85%. With an average temperature of 2°C (36°F), this humidity feels like an icy blanket clinging to your skin, making travel challenging as the cold dampness seeps into your bones and fogs your breath.

March Average Humidity in Saint Johns

This chart illustrates the average monthly humidity levels in Saint Johns, 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 Saint Johns is approximately 85%, 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 Saint Johns

In Saint Johns in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Saint Johns.

Maximum UV Index Levels in Saint Johns for March

The chart shows the monthly maximum UV Index (UVI) for Saint Johns 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 Saint Johns typically reaches 5, which falls under the moderate exposure category.

Data source: Saint Johns 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 Saint Johns Compares to Other Months

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

This table compares monthly weather conditions in Saint Johns, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	63 mm (2.5 inches)	88%	low
February Weather	-3°C (27°F)	66 mm (2.6 inches)	87%	moderate
March Weather	2°C (36°F)	63 mm (2.5 inches)	85%	moderate
April Weather	8°C (47°F)	88 mm (3.5 inches)	86%	very high
May Weather	15°C (60°F)	121 mm (4.8 inches)	80%	very high
June Weather	21°C (70°F)	117 mm (4.6 inches)	80%	very high
July Weather	24°C (75°F)	68 mm (2.7 inches)	80%	very high
August Weather	22°C (72°F)	68 mm (2.7 inches)	80%	very high
September Weather	18°C (65°F)	101 mm (4.0 inches)	80%	high
October Weather	12°C (53°F)	116 mm (4.6 inches)	84%	moderate
November Weather	3°C (38°F)	63 mm (2.5 inches)	89%	moderate
December Weather	0°C (32°F)	60 mm (2.4 inches)	86%	low