April Weather in Hartford, United States

Last updated: June 24, 2025

In April, the average temperature in Hartford, United States hovers around 7°C (45°F). Expect a wide range, with minimums plunging to -18°C (0°F) and maximums reaching a warm 29°C (85°F). During this month, precipitation totals 80 mm (3.2 in), typically spread over 9 days, while the average humidity lingers at a comfortable 79%.

April Temperature in Hartford

In April in Hartford, the average temperature is 7°C (45°F), with maximums potentially reaching 29°C (85°F) and minimums dipping as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both chilly and warm conditions.

April Weather in Hartford: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Hartford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartford, April typically has an average temperature of 7°C (45°F), with highs reaching up to 29°C (85°F) and lows dropping to around -18°C (0°F).

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

April Precipitation in Hartford

In Hartford in April, the total precipitation amount is 80 mm (3.2 in) over the course of 9 days.

April Precipitation Trends in Hartford

The chart displays monthly precipitation patterns in Hartford, 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 Hartford, April typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 9 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 Hartford

In Hartford in April humidity is 79%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill wrapping around you, making outdoor explorations uncomfortable and requiring extra layers for warmth while you navigate through the misty air.

April Average Humidity in Hartford

This chart illustrates the average monthly humidity levels in Hartford, 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 Hartford is approximately 79%, 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 Hartford

In Hartford in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Hartford.

Maximum UV Index Levels in Hartford for April

The chart shows the monthly maximum UV Index (UVI) for Hartford 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 Hartford typically reaches 8, which falls under the very high exposure category.

Data source: Hartford 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 Hartford Compares to Other Months

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

This table compares monthly weather conditions in Hartford, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	20 mm (0.8 inches)	80%	low
February Weather	-7°C (20°F)	23 mm (0.9 inches)	84%	moderate
March Weather	2°C (35°F)	65 mm (2.5 inches)	75%	moderate
April Weather	7°C (45°F)	80 mm (3.2 inches)	79%	very high
May Weather	15°C (59°F)	127 mm (5.0 inches)	74%	very high
June Weather	23°C (73°F)	83 mm (3.3 inches)	81%	extreme
July Weather	24°C (76°F)	81 mm (3.2 inches)	82%	very high
August Weather	22°C (72°F)	95 mm (3.7 inches)	80%	very high
September Weather	18°C (66°F)	102 mm (4.0 inches)	75%	very high
October Weather	9°C (48°F)	77 mm (3.1 inches)	77%	moderate
November Weather	1°C (35°F)	24 mm (1.0 inches)	85%	moderate
December Weather	-3°C (26°F)	39 mm (1.5 inches)	83%	low