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April Weather in Hartford, United States

Last updated: June 24, 2025

In April, the average temperature in Hartford, United States is a comfortable 14°C (58°F). However, be prepared for a bit of a weather rollercoaster, as temperatures can dip to a chilly -3°C (27°F) or rise to a warm 30°C (87°F). Expect to encounter 149 mm (5.9 in) of precipitation spread over 12 days, contributing to an average humidity of 82%, making it a rather damp month.

April Temperature in Hartford

In April in Hartford, the average temperature is 14°C (58°F). The maximum can reach 30°C (87°F), and the minimum can be as low as -3°C (27°F). This diverse range of temperatures makes it a great time to explore both indoor attractions and outdoor activities.

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 14°C (58°F), with highs reaching up to 30°C (87°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec374150586976807873624643
Data source: Temperature data for Hartford generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Hartford

In Hartford in April, the precipitation amount is 149 mm (5.9 in) spread over 12 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 149 mm (5.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec931501291491261251039210311593106
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Hartford

In Hartford in April, humidity is 82%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and sticky.

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 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101110109753
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.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)93 mm (3.7 inches)87%moderate
February Weather5°C (42°F)150 mm (5.9 inches)86%high
March Weather10°C (50°F)129 mm (5.1 inches)86%high
April Weather14°C (58°F)149 mm (5.9 inches)82%very high
May Weather21°C (70°F)126 mm (5.0 inches)82%very high
June Weather25°C (77°F)125 mm (4.9 inches)83%extreme
July Weather27°C (80°F)103 mm (4.1 inches)80%very high
August Weather25°C (78°F)92 mm (3.6 inches)74%very high
September Weather23°C (73°F)103 mm (4.1 inches)71%very high
October Weather17°C (62°F)115 mm (4.5 inches)78%high
November Weather8°C (47°F)93 mm (3.7 inches)88%moderate
December Weather6°C (43°F)106 mm (4.2 inches)88%moderate

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