March Weather in Saint Johns, United States

Last updated: June 24, 2025

In Saint Johns, United States, the average temperature in March hovers around 9°C (48°F). While you can expect minimums dipping to -8°C (18°F), there's a possibility of warmth with maximums reaching 26°C (79°F). Be prepared for 21 mm (0.8 in) of precipitation spread over 4 days, and don't forget the notable average humidity of 71% that adds to the ambiance of this vibrant month.

March Temperature in Saint Johns

In March in Saint Johns, the average temperature is 9°C (48°F). The maximum can reach 26°C (79°F), while the minimum can dip as low as -8°C (18°F). Be prepared for a wide range of temperatures while traveling, so pack accordingly!

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 9°C (48°F), with highs reaching up to 26°C (79°F) and lows dropping to around -8°C (18°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 precipitation amount is 21 mm (0.8 in) over a span of 4 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 21 mm (0.8 inches) of precipitation spread over approximately 4 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 Saint Johns

In Saint Johns in March humidity is 71%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor exploration brisk and invigorating, yet slightly uncomfortable unless you’re dressed warmly.

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 71%, 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 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, 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 10, which falls under the very high 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	2°C (36°F)	25 mm (1.0 inches)	81%	moderate
February Weather	4°C (40°F)	29 mm (1.1 inches)	83%	high
March Weather	9°C (48°F)	21 mm (0.8 inches)	71%	very high
April Weather	14°C (57°F)	13 mm (0.5 inches)	61%	extreme
May Weather	18°C (64°F)	9 mm (0.4 inches)	48%	extreme
June Weather	24°C (76°F)	6 mm (0.3 inches)	36%	extreme
July Weather	25°C (77°F)	32 mm (1.3 inches)	37%	extreme
August Weather	24°C (76°F)	19 mm (0.8 inches)	46%	extreme
September Weather	21°C (69°F)	19 mm (0.8 inches)	62%	extreme
October Weather	14°C (57°F)	17 mm (0.7 inches)	74%	very high
November Weather	8°C (47°F)	12 mm (0.5 inches)	82%	high
December Weather	3°C (37°F)	19 mm (0.8 inches)	82%	moderate