April Weather in Saint Johns, United States

Last updated: June 24, 2025

In April, the average temperature in Saint Johns, United States hovers around 14°C (57°F). Expect a wide range, with minimum temperatures dipping to -5°C (23°F) and maximums reaching 28°C (83°F). During this month, the area sees a modest precipitation amount of 13 mm (0.5 in) spread over about 2 days, and humidity levels remain relatively comfortable at 61%.

April Temperature in Saint Johns

In April in Saint Johns, the average temperature is 14°C (57°F). Maximum can reach 28°C (83°F), and minimum can be as low as -5°C (23°F). This variability makes it essential for travelers to pack accordingly for their visit.

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

The chart illustrates April 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, April typically has an average temperature of 14°C (57°F), with highs reaching up to 28°C (83°F) and lows dropping to around -5°C (23°F).

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

April Precipitation in Saint Johns

In Saint Johns in April, the precipitation amount is 13 mm (0.5 in) over a span of 2 days.

April Precipitation Trends in Saint Johns

The chart displays monthly precipitation patterns in Saint Johns, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Saint Johns, April typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Saint Johns

In Saint Johns in April, humidity is 61%. With an average temperature of 14°C (57°F), this humidity feels like a mild, refreshing embrace, making it a pleasant time for traveling as long as you stay hydrated and dress in layers to adjust to the subtle changes in comfort throughout the day.

April Average Humidity in Saint Johns

This chart illustrates the average monthly humidity levels in Saint Johns, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Saint Johns is approximately 61%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Saint Johns

In Saint Johns in April, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Saint Johns.

Maximum UV Index Levels in Saint Johns for April

The chart shows the monthly maximum UV Index (UVI) for Saint Johns in April, 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 April, the maximum UV index in Saint Johns typically reaches 12, which falls under the extreme exposure category.

Data source: Saint Johns April 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 April 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 April’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 April’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